Matter only partly resolved

I lodged a complaint on Hallo Peter to which MTN has responded. Thank you. I am informed that an amount of R261. 61 will be refunded to my account, this being the overpayment for a month's notice. However. i cancelled my contract on the 5th of October. A month after that is the 5th of November. I used almost no data at all in October, having been told it fell away immediately I served notice to cancel. This means I paid for almost nothing at the end of September. - except the month's notice. R773.00 was then deducted on the 31 October - presumably to cover the balance of the month i.e to the 5th of November.. How is a refund of R261.61 an adequate refund. Then on the 30th November, a sum of R821 was deducted. There has been no mention of refunding this. Why not? I would appreciate clarity - and even more proper reimbur*****t. I also am unimpressed at having to liaise with MTN over Hallo Peter (though grateful that this is possible) - surely I should have been contacted in person to resolve this matter - or been able to contact MTN directly. MTN's poor customer service remains an issue.