Rsaweb poor service

Wow after going through reviews of rsaweb I see this is kind of a norm that I'm also coming to moan about from rsaweb. I was also on a 3 month fee of R300 and something for the first 3 months and after that supposedly R700 and something. They billed me double last month due to the fact that they apparently forgot to end my promotion after the first 3 months. So I called them to say they had no right to bill me double due to a mistake on their side and they paid my money into my account and worked put a payment plan in order to fix their mistake which I agreed to,and can you guys believe it's just month after they worked put the payment plan and they once again billed me double or as they call it back order billing. I'm just so fed up and not even sure if they going to call me back this time again, but clearly after reading some of the reviews this is something they usually do the double billing because surely all the people that complain about ******* billing or double billing cannot be a coincidence