Disgusting service

Good day, I am very unhappy with the service that I have been given by Sumsug Mall of the South. On the 22/06/18 I took my phone for repairs at Dion /Samsung client services as my phone was not switching on, this has been the 3rd time I returned my phone to this shop. I took my phone back there as the previous problem kept on happening and was advised that I will receive a call once my phone has been fixed., a month went by I did not receive a call from Samsung and I had to call to follow up on the progress of my phone. I was advised that it was still with repairs in Sandton and they will contact me in a week, again I did not receive a call I called again after a month of my phone been taken on and asked to speak to a manager ,I cannot recall his name unfortunately he apologized that no one called me to give me feedback but they are waiting for some part that needed to be putted back in my phone. Disgustly so I still have not received my phone nor a phone call to advise me of the progress of my phone.I am more than disgusted with the service that has been provided to me as a client and I would like this matter sorted urgently.