wheel chair or bust

Do to my health condition Parkinson's and cervical stenosis I use an electric wheel chair unfortunately the scooter store went out of business leaving all there customers like me without anyone to maintain and in my case every 5 years the insurance will cover a new one I still have 3 years to go the chair is a total mess bald tires are a menace battery is going fast etc I have called all the wheel chair companies no one wants to help there exuse is you didn't buy you chair from us medicare doesn't help either so I'm asking for help folks I don't want to be stuck in the house this summer its rare enough with my condition to feel well enough to want to go out without the chair I won't have a choice thank you all grease is the word