breach of agreement

09 June 2015 i upgraded my headset at a MTN branch at the Middelburg mall in Mpumalanga . i was assisted by the lady called Nhlanhla . I have had a top up line for the past four years and have been happy with it . On the day in question upgraded to a Sumsung Tablet 10.1 for going for R259.00 per month and will receive 500 megabits and if i need more i will have to top-up . 2nd Sep 2015, MTN send me a sms informing me that i got an outstanding bill of R 2792.98. i was shocked from where is this bill coming from i checked my bank statement i realized that MTN had put through a debt order of R1451.55 in July . Now i went back to the store next day, the lady is said not to be working anymore.i presented my case to the personal present i was given a reference number pending investigation. According to the store i would have had a response within 2-48hrs and the store would call me ,which didn't happen. Unfortunately i work outside town so it took me 5 days to feedback, only to be told that the bill of was of charges on extra service on the line .which was part of agreement in the first place I then asked itemized bill which should take 2-24hrs.still waiting till now <br> <br>