Air Conditioner problems of the 2009 Volkswagen Jetta

In April of 2016 car just had 6 indicator lights on dash. Just happened one day on the highway. Speedometer, gas gauge none of the dash worked. Red light constant flashing. We ended up having to park it for 6 months while still paying 300 a month car payment and full coverage insurance until I had money to fix it. Around the same time the back passenger window stopped working and still doesn't work. I got this car in March of 2015 I believe. It has cost me so much money and I am hoping that I may be able to get a reimbursement on the 800 I spent to fix it, only to have it do this stuff randomly every few months. Just 2 weeks ago I had to slam on the brakes while driving and there was a bang sound and I drove it home. The next day it drove to work ok and then on way home when it started it immediately was running badly and check engine light and all that was on again. We took it to mechanic and he said thermostat was stuck open and it did need a coil and wires or something also. It has been just constant with this car and I am spending a ton of money. It's really difficult raising a family and working 30 miles away from my home and dealing with this constantly. Oh, and the air conditioner only works in the winter time. Definately not when idleling. Mechanic says that's a 400$ part so I'm just trying to scrounge up the money to fix that part of the electric disaster this car is before it hits 101� on my days sitting in traffic. Please help. The document I have to upload is the reciept from the repair. It was messed up for almost a year before I could fix it. Mostly just sitting.