Poor service,

This is my 4rh mercedes. I yr ago I upgrade to new GLC Suv, what a dud. The vehicle-s stunning but by 8000km I stalled twice due to software glitches Recently, vehicle went for 1st service and service advisor indicated software glitches.. again. I have become used to having a certain service expected from mercedes brand but at this stage I think en KIA or Volkswagen is propbaly better The service provider at menlyn is very non chalant, like it's not her problem and makes no effort to get back to me on how mercedes intends to assist Mr. The principal dealer I bought it from keeps on telling me she will get back to me but never does. I'm having absolutely no joy from new suc and finding it the worst buy ever, who knew there-s price tag to stress. 15mil. Is there anyone that cas assist me with getting out of agility contract Regards, Debs