Overbilled, yet No Credit

To whom it may concern:<br> <br> My Monthly payments are R369.00 per Month for 24 Months. In January 2015 I was debited R369.00, in February 2015 I was debited R383.99 and in April 2015 I was debited R369.00. When I called the Call Centre via 083 808 to enquire the change in my Bill, a Consultant by the name of Juliana confirmed that I was incorrectly billed and will receive a Credit on the Next Invoice/Statement in April 2015. I was debited correctly in April 2015 however I was not Credited the overbilling in March 2015.<br> <br> Yes it's only a R14.99 that I'm enquiring about, but if you overbill R14.99 for 100 000 customers then MTN sits with R1 499 000.00 in Credit. <br> <br> Kindly assist in the matter above, and a response will be highly appreciated.<br> <br> <br> Regards,