No interest in your clients

I made a complaint end of May and Alice van Der Merwe responded and said that my money that was incorrectly debited off my bank would be refunded in 5 working a days. It’s now 12 days later. I have had no response or indication that my refund was done. I emailed my bank details to the retentions department as per their request. I am so frustrated how I am being treated. The R5000 would get interest if it was in my bank account yet it still sitting at MTN and this query is ongoing for 3 months now. This is absolutely unacceptable. No one is following up to see that the issue is resolved. Alice you need to do a better job at ensuring that the query is completely resolved and make sure with the customer by doing a courtesy call. Unbelievable!!!!