Mercedes Benz service

I would like to escalate the following complaint to your organization, I have logged numerous calls to Mercedes Benz SA and have come to no resolution.<br> Reference no: 1-***<br> Reference no: ***<br> Vehicle : Mercedes Benz C180 CGI BE Elegance A/T<br> Date of Registration: 2011<br> Registration no: BB77MKGP<br> This vehicle was serviced at Sandown Motors Constantia on 06/06/2014, inv ***<br> A day after we collected the vehicle, the engine light came on, we contacted the dealership and they sent out a technician to diagnose the fault, they drove the vehicle back to MB Constantia.<br> They re- set the engine light and informed us that there is no fault.<br> +- a month later the engine light came on again, we contacted the dealership again and they sent out a technician who re-set the engine light at my wife's place of work.<br> In October the light came on again, we were asked to bring in the car to the dealership, Salim (service advisor) attended to the vehicle.<br> He reported to me that the fault had to do with a shaft which was not in alignment. He asked that we bring in the vehicle on Monday morning, the car had to be booked in for a week to be repaired.<br> it is know July we still no r