Poor Service again

I have been battling since June just to get 1 simple request completed. The cancellation of an alternative nr. I was advised on the 30th of June that the alternative nr. has been deleted and that I am not liable for any money to be paid (a credit would be raised). In July I noticed a balance of R2 073.12 showing on my account. I spoke to a lady at customer care who told me she would sort out the matter and gave me a ref nr. ***. It is August and that outstanding amount is STILL reflecting on my account. I just spoke to another consultant at customer care who advised me that he will need to take it up with the back office (again). I am getting sick & tired of this back and forth and having to follow up every single month. Why cant you sort out this matter once and for all?? If that amount is deducted at the end of Aug I will request copies of the call recordings and I will take this matter further.