Poor service

I have been paying double some months and the company keeps on making errors and my money would not be reversed. Yesterday I paid 516,00 but till today I'm still disconnected. When I call, they hang up twice on me after waiting for 16 minutes on the queue. I've spent lots of airtime every month to get my decoder reconnected after making me pay double and they will then demand proof of payment, afterwards they will confirm one payment and the other disappears. I'm so disappointed by DSTV