worst service ever

I used to have an account with Telkom mobile that has been cancelled almost a year ago. Every month I got a statement that I didn't give any notice to. The last statement I received my husband noticed that that there is a credit of R407 where after I phoned Telkom mobile and the lady told me I that I do have a credit and that someone from the accounts department will phone me. I got a sms with the case number ********** 1. No one phoned me and today I got a sms that the case has been resolved. When I phone them now all of a sudden the excuse is that the credit was a system error. I got statements for months stating this credit but as soon as I queried it the system has conveniently made an error. When I was a customer at Telkom and it was time to pay the system never made errors. I guess you are not allowed to swear here but Telkom really frustrates the hell out of me. I would really NOT recommend them to anyone.

Worst pathetic excuse ever. I feel money is owed to me and I want it paid out to me