Poor service

I had my Samsung Tablet repaired at Samsung (11 Park lane in Century City and was told it would take 7 days. It was eventually returned 14 days later. Wren I received it my SIM card had been removed. I have called daily since Friday 27 February to find out when the SIM card will be returned to me. Fifty percent of the time no one answered the telephone. The other fifty percent of the time I was told they would find out and get back to me. To date no one has come bothered to get back to me. The telephone manner was appalling with all the people I dealt with and in the background there is constantly to and fro shouting to someone in the office. I was promised on every occasion that the Manager, Riaan Burger would contact me but that never happened. I am currently speaking to Liesl Baker offered to do a SIM swap as they are unable to find my original SIM Card.