Bad billing system and bad servers i have ever experience in my entire life

My name is Humbulani Mudau *** i have received incorrect billing on my statement and bad services from DSTV. I have contacted MultiChoice several times with regarding to my account because the are billing me more than i was supposed to pay. Every time when i call ,they keep on promising that they will fixed the problem on my account but come month end they charger me more again. The consultant who assisted me on my last call by the name of Thia promise to take the matter up to billing section to give me credit on my account until today nothing had been done on my account, and this thing had been happening for the past 6 month. The service is very bad i spent almost R200 hundred rand calling them but my problem still not resolved until today the are still enjoying billing me more money every month. This company is steeling my money every month since last year. They use poor system that is the reason they keep on robing people money, many people are complaining about same problem.