It sounds like you've been having a tough time over all, I know its hard to deal with things when everything bad happens at once!
Ugh, everything bad really IS happening all at once right now. The day before Thanksgiving, our "good" car (which is really only "good" in comparison to our other car) broke down and we were stranded on the side of the road for a couple of hours. We're supposed to have roadside assistance with our insurance, and we learned the hard way that there are no tow trucks as far out in the country as we are so we had to call my parents to come pick us up and then spend the rest of the day trying to find someone who could tow our car.
So, we were left carless, because my other car was already broken down. We had to scramble to find a family member who could fix THAT car on short notice, so we would have a way to go- because the car that broke down the day before thanksgiving, no one could even LOOK at until the Monday after and we needed a way to go. Long story short, we can't get our "good" car fixed until the 15th(she needs a new distributor), and had to spend all of the money we put back for xmas to get the crappy car fixed. It gets 10 miles to the gallon, while our "good" car gets almost 30- so we hadn't budgeted for that much gas. So we had to take money out of the animal's vet fund to buy gas for my stupid Jeep. Until the 15th...DH has to drive 2 hours to work and 2 hours back every day, in a car that gets 10 miles to the gallon, for the next 2 weeks. It's kinda killing us. OH, and, icing on the cake, because my jeep has been broken down for so long the registration is expired. We have not had one single spare second to go get it renewed this week. So we've been driving with tags that expired 6 months ago for a week now, praying that we won't get pulled over.
Then, on Thanksgiving day, my mom and my aunt a horrible accident on their way to my house. The cruise control on my mom's Jeep Liberty stuck, her car freaked out, and she ran off the road, spun around in mid air, and hit a telephone pole at about 60 mph. Her car was totalled, and there was a good couple of hours on Thanksgiving day when I wasn't sure if my mom or my aunt was dead or not- we couldn't get any info and had no car (the jeep wasn't running yet) and no way to go and see what the hell was going on. My mom is fine, just MAJORLY banged up, but my aunt got hit on her side and the airbag gave her a really, really bad concussion. Thanksgiving day was spent in the emergency room wondering wether my aunt was going to be alright or not. But my mom is waiting for the insurance to pay out on her car before she can get another one- so we've been having to run errands for her, take my sister where she needs to go, and help her around the house since she's still really messed up physically for the past week. We ended up not even having thanksgiving dinner this year, by the time we got to my mom's from the emergency room that night most of the food was ruined.
Then I come down with the flu and start having some issues with my other health problems as well and have spent the last week going back and forth from doctor's visits. Because Josh is in the air force(getting out in January, thank god), I have to go to doctors on base. We live 2 hours away from base. So, we have to drive 2 hours there and 2 hours back to get to our appts. Did I mention that DH acts like a dying baby when he's sick? Yeah, so I've had to see to him too, on top of being sick myself.
My dad is also getting married soon and I'm trying to help him organize that. Ugh.
So then Chief gets sick, on top of everything else we've got going on. Plus, you know, I still have to find time to feed and pay attention to my 10 zillion other animals. Sigh. So yeah, that's why it takes me so long to respond to this thread. I intend to call the vet and throw a fit over what he did, but I just plain don't have the time or money to pursue it further right now. I've already called to have the charges on our credit card held. Now I just have to get hold of the vet, who is majorly avoiding my calls.
I'm sure the vets just decided that since your dog had parvo, you had probably never vaccinated him, and if they asked then you'd say no and if they waited they'd never see him again and then he'd never get any of his shots and would get sick again. So I'm sure they were trying to do what's best for Chief (considering he has this terrible owner who doesn't even bother to give him his shots and keeps him outside all day),
I'm sure that's EXACTLY that happened. When they asked if he had been vaccinated, it was clear that they didn't believe me. He doesn't wear a rabies tag because he lost it running around in the woods somewhere, but I could have brought in his records if they'd asked. They didn't come out and say it, but as we were leaving him there to be hospitalized one of the tech's said, in the most condescending tone possible, "This is why it's important to get your dogs vaccinated." Every time I told them that he WAS vaccinated, the just got quiet and gave me sour looks. 
They seemed to know what I was talking about when I told them he was an LGD, but they didn't seem to like it. They kept making comments on how he had burrs in his coat and how he smelly he was (I'm sorry, he'd been puking his guts out and squirting poop all over the place for the past 24 hours. Should I have had him professionally groomed before bringing him in?) and when they found out he had to stay they kept making comments about how "spoiled he was going to be" and how "he was going to get to sleep inside where it was WARM!"
The whole staff really liked him (probably because they thought he was abused or something) so when we came to take him home none of them would really speak to us, but they all wanted to hug chief and tell him goodbye. All of them made comments along the lines of "Aww, do you have to go back to sleeping in the mud now?? We're so sorry, Chief." 
For the record, Chief is probably the most content, balanced dog I've ever met and was ecstatic to be back with his goats. He has 3 dog houses, and a heated chicken coop, a kennel, and a heated barn to sleep in if he wants to. I don't think it gets much cozier than sleeping between two big warm horses in a pile of warm straw in a heap of his beloved goats. Yeah, we torture him. Someone please help our dog.
But yeah, anyway, we're going to raise hell about being charged for potentially dangerous, unnecessary treatment that we never authorized. I'd be satisfied with just an apology for treating us like idiots and dog abusers and effectively accusing us of lying about our dog's vaccinations, but I guess getting the money we paid for those unnecessary vaccines back would be good too. 