Out of bundle charges

Vodacom billed me R1600 for my September out of bundle data charges. Upon querying this, I was told I used 800 mb of data which incurs a R 2/mb charge. I explained that I receive an out of bundle SMS notification which then allows me to buy once off bundles but this has not happened. The consultant explained to me that my account had been migrated to a new system and there was a likelihood that some of the functionality on the new system was not working. I also noted that Vodacom does not charge out of bundle rates at R 2 if you have a monthly recurring data bundle(the rates are much lower) to which he had no response other than he will escalate and get back office to resolve.<br> <br> A credit note for R 600 was processed yesterday but is not a true reflection of my refund since my account was migrated as it does not account for the fact that I did not receive any form of sms notification that I had depleted my data nor was I informed of the likelihood that this sms service may be down so I disputed the charges once again. Today's response was novel - it is a network wide problem so if your account was migrated, you are overpaying on out of bundle data. Still waiting fo my refund...