Bad Service from Dstv multichoice

Hi, I called Multichoice on Friday because I got home and find that my decoder was suspended. When I checked it was showing that I'm owing. I than called them because I didn't understand why was it suspended when I made a payment on the 20th,the lady Zinhle told me it was a mistake and reconnected my decoder, but I asked her to log a complaint and she told me she did and I was going to get a call immediately after that because she said I will get a call before end of that day. I'm still waiting for the call even today. I wanted them to pay back my airtime I used to sort out an issue that eminated from their side.