CREDIT NOT PASSED ON ACCOUNT.... 3 MONTHS MIGHT NOT BE ENOUGH TIME... I WILL WAIT A LITTLE LONGER

I have a billing query going back to my June and July 2017 invoices that I have received via email in July and August 2017. Vodacom wrote to me on 12 July and 16 August 2017 via email wherein they agreed to credit my account with R4 304.50 and R4 014.45 respectively. The credit of R4 304.50 was never passed on my account and I have been struggling for 3 months now to get it done. The story is always the same. A query is logged, they promise to phone you back but never do. Next month it is the same story all over again!!!! Vodacom has suspended my services today on an account that is paid up to date, except for the credit that they allowed but did not pass on my account!!! This is unacceptable. Vodacom, you have lost a loyal customer today!!!!