Super rude store assistant

I have never received such bad service. My decoder was not working so I called the call centre an I was advised that the error message I am getting means my decoder needs to be tested. On the 1st of May 2018 I took my decoder to a multichoice stall at Sunnypark mall in Sunnyside and the lady told me that she cant assist because a CUSTOMER HAD LEFT with the cord she needs to use to test my decoder and she advised that I should try another store down the road. At the next store I found a lady that had a earphones in her ears and before I could even finish explaining she told me that he has no signal. I tried to explain that this is the second store and she just gave me a number to call. I stood in the store and called the call centre again the agent was very polite unlike the lady in the store that serves customers with earphones in her ears. I got off the phone cause they couldn't assist I asked the lady for her manager and she said he is not around, I then asked for her name because I wanted to complain about her bad service. She laughed and said she is not going to give me her name and I can go and report and than come back and check on her cause nothing will happen. I have never ever dealt with such a rude person. Disgusting really.