Playing for time to pay YOUR money back!

On 28 July 2021 I went to pay my account at Vodacom (Flamwood walk Klerksdorp). Without being told I will be double debited anyway because of timeframes. On Saturday 31 July 2021 a sms from my bank confirmed that this was the case. I opened a query with vodacom to refund the R1032,83. Although it is clear that I have overpaid, I was requested to send proof of payment to ***, which I duly did on 5 August 2021 15:03. On the Vodacom app it shows that the query was resolved, yet the money doesn't reflect on in my bank. After follow up I was told that they still await my proof of payment, although the amount shows on the system and the mail was sent. I get the idea they are playing for time. Taking my money was no problem and it was taken without a flinch. Now I have to struggle to get my money back and wait another 10 working days. R1000 might not seem like a lot of money but for me as a single mother, it is a lot of money. If we pay late there are penalties, but not the other way around. I am extremely disappointed as I have been a loyal Vodacom customer since February 2002. I might be a small fish in the Vodacom pond but I am a client nonetheless, a loyal one if i may add, but this is how you get treated if you want your money back.