My car wouldn't go in reverse so I went to Gibralt...

My car wouldn't go in reverse so I went to Gibraltar they told me my problem was due to my rear brakes so $735 later my car still didn't go in reverse.I brought the car back they held it over night couldn't find the problem and said there was nothing they can do. I was warned not to go there but assuming Gibraltar specialized in transmissions I thought they can solve my problem ......they didn't they sold me a $735 break job instead.