general problems of the 2007 Mercedes Benz C230

Came to my car one day after it sat for maybe an hr at my mechanics house the doors unlocked with remote, went to srart car and it did not a make unlock vibrating sound after that realized it was not working, spent 400 dollars each on two different keys both of those did not work, techs had issue orogramming key.

I was entering to my car and ajust the steering wheel, but it did not lock the weel now is up and down and so dangerous to drive any movement and the weel goes up or down depend how I turn down left or rigth and they said that is not a company recall on that situation, but is a safety mara shoul be cover is very unsafe to drive and so expensive to fixed.

The brakes failed while driving my 2007mercedesbenz. 5th time. I leased a mbenz 2007 C230w from bill ussery mercedes January 2007. 2 weeks from purchase brought the car into service told them the car would shake vigorously when pressing on brakes to slow down from 40mph or more. Told nothing was wrong. 2months later brought car back and car was shaking when braking. Confirmed the shaking and brake rotors brake pads,brake discs were replaced,front suspension loose/tightened. This has occurred now on 5 separate occassions. Ongoing since February of 2007. I felt unsafe in the car. Called mbusa on 4 separate occasions beginning in October til now. Claim was filed and I never heard back. On may of 2008,my brakes did not work while traveling on the interstate. I went to slow down to exit,no brakes!car shook worse than ever!had the car towed into mercedes. I will not drive that car again!they refuse to replace the car. Once again stated they fixed my car,to pick it up or storage fees would be charged and car impounded. I refuse to drive a car that can injure or kill me or my son or someone else. The service records on this car clearly state all of the above. Mercedes benz refuses to accept responsibility blaming me as the cause for the rotors, brake pads and discs to be replaced 5 times in less than one year. They won't test drive the car on the interstate to simulate what happened to me, but they want me to come get the car and drive it?I am still without a car and I paid for this lease in full 2yrs. I will never drive it again. No one should have to drive it period!I have never had problems with Mercedes Benz and I love their cars, but this one in particular is defective. Please help me. Thanks.