That's all a bit strange.
My mother used to have a car and a mechanic who was really great and all and affordable, but she'd bring it in to get fixed and a few months later, something else would break. Again and again. She ended up going to a different mechanic and it stopped breaking - maybe it was just a coincidence, but perhaps you should try a different mechanic?
If you're not going to fix it, you can sell it for parts. You won't make your money back but it's better than nothing. Like for my car, just to buy one front headlight is $100 second hand. If you've replaced a lot of things they'll be practically new parts. Pull it apart and sell things on ebay