CARCHEX review: Carchex warranty

I took out an extended warranty with carchex. The check engine light came on and I had the car towed to the nearest shop. they told me it had a transmission problem so I gave them my carchex warranty card and they said they would handle the rest. he called them and they told him to hold off until they decided what they wanted to do. A week later they said to go ahead and give them an estimate. They had to tear down the transmission to give them an estimate. I rented a car because it was supposed to be covered for the time my car was in the shop. then they wanted all the service records for my car so I got those together and emailed them to American Auto Shield. I didn't know they used A.A.S. or I would have never purchased this warranty. A.A.S. is not accredited by the BBB. They also have 100's of complaints. All said and done I needed my car as I'm a disabled vet and have doctors appointments that I have to go to and the rental car was costing 400 dollars a week. After almost a month I decided to pay to get my car fixed at a cost of 3,154.04 thinking they would reimberse me. Also they never called me or the repair shop the whole time my car was in the shop.Still have not heard anything from them to this day. So beware of Carchex and American Auto Shield. They will do whatever they can to get out of paying claims!