Engine Exhaust System problems of the 2005 Mercedes Benz C230

First, my steering wheel wire was replaced from a faulty srs light coming on and the esp light coming on. I had to pay for all of this. Next, euromotor cars said the steering wheel collar was broke. I have never had that fixed because they wanted to charge me and I felt they should replace the collar since they replaced the steering wire. Now my car does not start and the instrument cluster does not light up. I cannot unlock the doors with the remote key and I cannot unlock the trunk of the car. My car just sits because I feel I should not have to pay for any of this any more. I have put $6,800 in repairs in this car. I do not want to pay for another vehicle. I feel my car is unsafe. My car was first serviced at herb gordon's auto group in silver spring, maryland. I was not happy with the service so I decided to try euromotors and the service was worse. They continue to put in codes so there will not be a recall and the consumer has to pay out of pocket. Please help in resolving some of the issues I have had with this 2005 C230 kompressor Mercedes Benz. I would also like for this car to be entered into the recall for the steering wire repair just as the e320. I purchased the car with 4,000 miles on it in 10/2005. Thank you.

Musty smell in the air conditioner , and I have taken m the vehicle to dealer three times in boerne texas. They have temporarily eliminated the smell although it continued to return. The vehicle is still under warrant, y but there has been no permanent solution to this problem. The warranty will expire in 3 months, and I would like the problem to be resolved prior to warranty expiration.