Very Bad Service Do not buy Chev vehicles

We bought our Chev Sonic last year, in November my steering wheel audio controls stopped working and the radio says rear view camera not working when car is switched on. My car went in 3 times already and they could not resolve the problem or tell me what the problem is. Most of the General Motors closed December now it is a problem to get my car sorted out!!! I have been waiting since 8 January for Edenvale GM to contact me to take my car in for them to check. They make bookings without contacting you to check if it is fine with you, they already having attitude regarding my situation. I WOULD NOT RECOMMEND TO ANYONE TO BUY A CHEV, THIS IS THE SECOND CHEV I AM HAVING PROBLEMS WITH!!!!! THE SERVICE IS VERY BAD, NOT EVEN THEIR CUSTOMER SERVICE IS RESPONDING.