general problems of the 2004 Mazda Tribute

I was driving and all of a sudden my car began to slow down and not go foward and hesitated to go backwards. I had to have it towed to shop. The shop machanic informed me that the transmission was built without a pressure release valve,and that is what cause it to malfunction. And I would like to know why you don't have transmission in dropdown box of affected parts.

The rear passenger wheel well has excessive corrosion through the frame of my vehicle. The corrosion has split my frame in half and left wholes surrounding the split. My shock tower is exposed and corroded making it unsafe to drive. The rear driver side is splitting in the same exact place. This is a serious safety hazard and obvious defect. The front end of my vehicle was just recalled and repaired for the same issue. I don't understand why Mazda has not addressed this issue already. Excessive corrosion has also occurred on the Ford escape made from the same line. Mazda needs to be responsible and correct this before a serious injury or fatality occurs.

Accelerator began to stick as I was approaching downhill. I could not get it to stop and ran a stop sign. I then finally managed to put it in neutral and pull to the side of the road. I have had this to a local Mazda dealership 4 times and it stills does the same thing. The dealership changed an iac valve and an intake tube hose. Back in 2012 I had a safety recall for this same situation. I took it to the dealership as instructed and almost exactly one year later I actually started having this problem. I've paid to have this vehicle worked on and the performance is no better than when I originally took it in. In fact, the performance is worse. Not only is this not safe for me to be on the road but everyone else on the road as well. Could someone please help me get this situation under control. It's beginning to become very stressful for me. I'm not usually one to complain but this needs resolved. I've done my part and paid a mechanic. All I expect is the problem to be fixed. Thank you, janice mccolm.