I want my money back

on the 25th of September I made an incorrect transfer amount of R3000 instead of R399 to Dstv via my remote banking, when I realized that I made that error I called immediately and I spoke to Nolwazi Khanyile,who informed me to send proof of payment to her manager Portia Phiri, then I send it and received an acknowledgment that it was received. and a Refund will take 5-7 business days. Keeping in mind that I need to pay my rent with the funds.

I then called on the 27/09/2019 and spoke to Muzomuhle Shozi who assusred me he sees the matter was escalated and he will motivate.

I then called on 30th and spoke to Ashleen who kept me on hold over 10 minutes and she handed the phone to Vuyiseka who is 2nd in charge as the was no manager available but I was not satisfied with the response and then she eventually gave the phone to the manager Siphandi Fumba who then requested and insisted I send a letter for refund with my banking details, which on the previous calls was never mentioned, however I did send as they say its needed and requested acknowledgement but this was not acknowledged. I called on Monday 07/10/2019 I spoke to Noxolo Siswane 4th Agent who promised that the manager Adrian Peter will call in 48 hours nothing has happened and I haven't paid my rent as it is as they refusing to refund my money back.