AVIS CAR SALE. I've been mislead it seems to me!!!

After searching for a used car to buy for me, I came across Avis car sale that had real nice cars for reasonable prices (was very impressed). They then asked me if I would like to have auto armor(glass protection) added to my car, I agreed to have it done at a extra cost. When I went to fetch the car later that afternoon at the avis dealership, everything seemed to be in order but when I got home, I found that the one back door of my car did not lock. I called the dealership from avis first thing on Monday to report my problem. They came the following day to collect my car to have it fixed. When I received my car back, it seemed to be in working condition but they never replaced my petrol money for the negligence they caused. Then this afternoon when washing my car, I noticed odd looking white dots on my car and with closer inspection, I saw it was chipped paint that was covered up with what seemed to be tip-ex. I'm extremely disappointed with what I found. Can just imagine what other things they tried to hide and cover up from me. If only I knew this ahead of time, I would have rather chosen a different car. It is only time before ALL these \tip-ex"fall off!"""