Constant over charges and rude consultants

Every month without fail you as a client has to manually keep track of your account. They always picked extra R50 on and when you call it is a system error and they tell you to pay the balance you see and manually subtract the R50. Yet when you do that they disconnect you again because you subtracted that R50 and paid only what you are supposed to pay. Then you call again, using your airtime then like a fool you refer back to what you were told and they tell you I don't know why that consultant said that. Every single month this happens. If they put extra charges in error why can they not immediately reverse it because there system never corrects itself like they say. It just keeps adding. I feel there are thousands of people who pay these incorrect balances and multichoice just takes that money and gain. I can't wait for their competitors to surface. I tired of dealing with their rude agents and supervisors who speak over you and just their *****ed ways altogether. You make a thousand phone calls for their errors. And mind you this system never makes an error to under charge you. It always overcharged you in "error"