MTN CUSTOMER CARE CALL CENTRE - NO SERVICE AGAIN

This is not the first complaint of bad service for MTN. 2015 I had a lot of trouble with this people!! Hellopeter was the solution !! I did upgrade my contract in November 2015 and that will be the last business from my side to MTN. I did request MTN on the 4 November 2015, for all invoices for the last 2 years (24 Month contract ). Their say I owe them on the November statement R288.80. On the December statement all of a sudden its R167.80 .This outstanding amount of R288.80 or R167.80 , I REALLY DONT KNOW THAT I OWE THEM THE MONEY!! IF I DO , PLEASE SEND ME THE LAST 2 YEARS INVOICES, LIKE I REQUESTED IN NOVEMBER 2015 PER E-MAIL AND PHONE CALLS IN DECEMBER 2015. HOW MANY TIMES MUST I ASK?? This account is 60 days, every month I pay on time (EFT) I need to recon this account to see where I owe MTN money before my phone is going to be cut off!!!! I need invoices for this 2 numbers *** and *** on account number A***. E-mailed to [Email Removed] (Invoices must be for the period of the last 24 months) Today I went to MTN for a data contract I they did refuse because of this outstanding money. If I don't owe them they will make sure my name is cleared