Radio/tape Cd Player problems of the 2003 Saturn ION

When I bought my car it wouldn't start, the dealer said it was because it sat for a long time. This problemhas been constantly been an issue since in extreme weather. I was told during one shop inspection it was electrical and they have seen a lot of this but don't know what causes it. With this case it has shut my radio on and off and a big issue that I have is when I am stopped with my foot on my brake the engine will revve up and jerk forward. This happens in the city when I'm driving at slower speeds. I've had to run off the road to avoid hitting people, the only thing that saves me from hitting anyone at lights or signs is my safety gap between me and a front car. I've been late for work, ruined vacations, been stranded with an infant in 100 degree weather, and wasted a lot of money trying to find the problems. I bought it new and have heard every excuse for the problems. . . You guys have finally stepped in on one of the problems we have been having now gm needs to answer the rest. I'm not the only one with these problems. If you do a search online you can pull up 100s of issues exactly the same. I have all my receipts when I took it onto Saturn dealers. Now I have doors that don't seal but I'm sure this is because it's old or other excuses. I had to buy another car because my kids aren't safe in it. I can't even have a clean conscious trading it in so I still am stuck with it. I have complained about this issue before but no one listens.