REFUND FOR SUSPENDED 3G ACC AND INCORRECT O/S AMNT

I refer to complaint logged on the 13th of September 2015, with regards to the billing on my 3G account that has been suspended. Veronica responded to my complaint and indicated the outstanding balance of R2515.65 in her response. She also called me the next day (14/09/2015) to inform me that I will be refunded for 3 months of the 3G not being in use.<br> Instead, I received an sms message from MTN on the 5th of October, stating that my account balance is R2892.05. An additional amount of R376.40 has been added to the account, instead of the refund that I was promised. I have no idea what the additional amount refers to, as I no longer receive accounts from MTN.<br> NOTE THAT I WILL NOT MAKE ANY FURTHER PAYMENTS TO THIS ACCOUNT UNTIL THIS MATTER HAS BEEN SORTED!