OVER CHARGED AND NOT RECTIFIED SINCE END APRIL

I upgraded to the Sky package at end of April. Initially it was not logged and the system still showed my old package. I have been incorrectly overcharged now since April. This has been escalated on several occasions to head office with no answer from anyone! I have been following up since it happened, and so have several staff at MTN Cresta. I even have a REF NO. but still nothing is being sorted out. It's a simple adjustment which needs to be made on the system - very stressful for me, the customer who has to run after MTN to find out why it hasn't been sorted out! I have never changed my no. or been with another company since cell phones have been around as I've always had brilliant service. There is no excuse for this, especially when there is SO MUCH competition in your line of business! Companies are quick to debit - let's see how quick you are to credit? I am extremely disappointed. REF NO.<br> REQ:***<br>