Automatic Transmission Control Module problems of the 2003 Toyota MR2

The drain tubes in the car does not work so, rain and snow will make the car fill with water . If the car is full of water the computer in the car doesn't read causing the car to fail which happened to me on the freeway. I could have been killed. The first time this happened they replaced all wet things in car . It did not fix the drain tube problem because after the rain my car is full of water again. Same failure with other cars. I think they want to put dry parts in the car again at who's cost theirs or mine? with all the water in my car again there has to be corrosion and other damage to the car that is not being fixed. I would like the car replaced with a new one since I am paying fifty thousand for my car . I did not by a fish tank. That is what I got . Please help! new car nightmare. Thanks.