GAME / RCS ******ing customers, costing me my mortgage loan application

I have a Game card and paid my account every month on time, I am currently in the process of buying a house, I thus decided to settle all my accounts including Game, I phoned for my settlement amount and then paid it. I then got a notification a week later that i still owed R40, I then paid R50 to make sure its paid in full. I feel that R40 was not my fault as I paid what I was instructed to pay. I then got a letter stating my account is paid up in full. A week later I found in again after confirming with a consultant that the account should be in a zero balance since i settled the account twice already, I then phoned a week later to make sure it is now finalized since I already got prroof via email that its paid up. Another consultant then told me yesterday i still need to pay R80, and i then deputed it, this morning in my emails i got another email to state i owe R146. I do not know what is going on and dont know how this is any of my problem since I twice paid what i was instructed to pay. I would not recommend anyone to do bussiness with RCS or Game if this is how they try to ****** their customers. This is most probably going to cost me my mortgage application.