Overcharge on contract

I contacted MTN last week ,today is the 26th January - regarding my contract account.

I opened an additional contract with MTN last year of which i was charged an additional fee above the normal contract fee of R149-00 ; of which i was aware an anticipated this billing.

I was then charged over and above R149-00 for a second time in a row by MTN, I contacted the call center an was told some data charge was not removed. I received no reference to which i can refer back too.

I contacted the call agent again today and was told no reference was logged- which means i will be billed over and above the contract amount AGAIN . According to the lady i first spoke to when i called she advised the request will be escalated as it is related to accounts. I am yet to receive a call from MTN regarding this matter since i was told the request will take between 3-5 working days which has expired.

I am not happy to be paying over an above what i am meant to be paying.

MTN this is a complete ******* and careless error to make especially regarding account payments!!

I would like feedback ASAP on this matter- i refuse to pay over and above on a continuous basis. I would also like to be refunded for additional charges that was billed to my account.