Telkom failure to credit my account

Had a very terrible experience with Telkom. I have been a loyal customer for about 2 years, faithfully paying my premiums. It happened that one of the numbers under my contract went overboard with minutes exceeded the monthly limit. All my numbers were frozen with no explanation of the cause. After countless visits to the store and calling over 5 times, I eventually got to understand that the issue was a limit exceedance. I played using my credit card, it so happened that my account was overpaid by R6000. I enquired and was told I need to submit bank statements. I submitted them twice, I have the emails. It’s been 2 weeks and there is still no word from Telkom. When I follow up I am blue ticked or told that some system is offline. I am overly disappointed by the level of unprofessionalism shown by Telkom. They are behaving like a start up. Just give me back my money.