Telkom Refund Awaiting 5 Mnths

I have been a telkom customer for approximately 45 years .In april i closed my telkom accnt and made a final payment .I had made an excess payment and as per telkom i had a refund on 9th May via an email. I have repeatedly phned telkom requesting the refund .To no avail .Last week i spoke to a mr Nhlanhla who promised to return my call which was Never done.After being a loyal telkom customer for 4and a half decades is this how telkom treats its customers . Incidently their billing system is So Pathetic in the last 5 yrs it Leaves much to be desired .To my knowledge the refund should have been done in may when the excess amt was paid ,not me Requesting my refund .If the mone Does Not Belong to you Return it