Pathetic service

I cannot believe the poor service I've been receiving at Game store in Highveld Mall since the beginning of February. So I brought back my hi sense sound system on 5 February because it was malfunctioning. It all started with a person who seemed to have not been interested in work that day. And the thing was taken in and was told I will receive a call/sms in 21 working days. 2 months later, no call, nothing from the store. I went back to the store today and a refund was done but it took straight 30 mins for me to be assisted. 12:30 I was back in the store trying to buy another sound bar to replace the one refunded and my game card declined. I went to the counter to be assisted with that, only to be told that the consultant is on lunch. Why is the store open and no one is there to assist? I used my phone to call rcs and there also, I was taken from one agent to the other with no help. I requested to see the manager and that did not happen. Was the Manger not at work? I was in the store for an hour and eventually had to leave because I was getting late to pick up kids from school. And sadly I still do not have my sound system. To say I'm disappointed and angry will be an understatement. Why do I need to beg for good customer service when I'm paying for it?