Incorrect debit amount

Dstv call centre is useless. On the 29/07/2019 I got sms from Dstv saying I'm owing them, I called them and they said thier system activated my old decoder by mistake. The lady told me that they will cancel that mistake and escalate this matter to finance and they will call me in few hours. Untill today I'm still waiting for their call.ref********-I62 On the 30/07/2019 I called for follow up , the lady who assisted She said the person who assisted me yesterday was supposed to escalate this matter to the mananger, but she will escalate. Ref ********-C1 19/08/2019 I called again after receiving sms saying R1017.22 from R1700. This time the gentleman assisted me , he told me that on theither system shows that I'm owing R904.00 as usually but I told him that when I press *120*56584# it says I'm owing R1017,22 , then he said his gonna escalate this matter to finance department and they will call me soon. Ref********-I66 . Untill today I'm still waiting for their call. On the 26/08/2019 they debited R1017.22 instead of R904.00 the call centre lady told me that they will credit my R 113.22 next month on my dstv account and I said no I want my money back because I've been calling dstv call centre but no help. She promised that the manager will call me soon. but Never called. Instead she told me to take legal action against dstv. And the is no ref number for that call. Wow