Please help with Chesters vet bills

7weeks ago Chester got attacked by a Mastiff, it got a hold of Chester's paw and bit it completely to pieces, it was so bad that both the vet specialists and myself thought his paw should be amputated but we agreed that he should have a chance, he had emergency surgery to try to close the worst holes, his bone was completely plotted on the underside for 7cm. and the big foot pad hung exstremly loose and almost all the tendons and ligaments were bitten over, it was / is terrible and he is in so much pain 12 hours later an extremely violent infection developed, so a microbiologist had to come in, it turned out that the Mastiff also hosted a very special staph strain 203 and since Chester did not have it in his bloodstream, it was 100% certain that it was the Mastiff who had given it to him, so Chester got/gets 4 different types of pincillin, at the same time I was told that we had to come 3 times a week because of my good relationship with the animal hospital, I got it at half price, 918 per time, if they only had to look at the paw and do nothing + 358 for dressing material, I change him myself the other 4 days and the things that need to be used are crazy expensive, it costs almost 473 per time plus 500 for medicine,but fortunately Chester is insured, he has the most expensive and best insurance and then came the big shock, the insurance would not cover, as I did not have the name of the owner of the Mastiff so they could sue him if he didn't have insurance, I explained that it was reported when the man ran away with his dog and totally ignored that we should at least exchange phone numbers the insurance company was cold, they refused to pay, I lost my first appeal, as it is written in the policy not in fine print, but in microscopic fine print And the animal hospital has been cheated so many times by people, so you have to pay every time, you can't do an installment plan, Chester had another operation where they attached his foot pad better and deep cleaned his foot, after that they told me that when when the infection is gone in approx. 5 weeks he should have amputated the big one of his toes and then 4-6 weeks with 3 visits weekly until the last 2 weeks when he might be able to manage with two visits, so at our last visit, the professor and the head doctor thought it looked so good that they will operate and amputated his toe already on the 23rd and I was completely shocked, I know we're lucky, I know it's only the toe that gets amputated, but I keep seeing it get cut off, at the same time I'm at rock bottom financially and it's been in my head since the insurance said no so now I'm completely down mentally, I never thought I'd have to ask others for help like this, but I don't know what to do anymore Chester is my wonderful good boy and I feel like I'm letting him down by not having all that money, but I've spent at least 56,000 on scans, visits and 2 operations as well as around 6000 on dressings and medicine, I will ask for the entire exact bill the next time we go to the animal hospital, because otherwise I have to upload the bills from every time we have been in there, and that is a lot of times, if you have questions of any kind, please ask Thanks in advance 

Christina and Chester©️