Airtime complaint

Hi, I mistakenly bought R1000 airtime instead of R100 on the 23rd of July 2020. Thereafter, I called Telkom to request for a refund as the airtime has not been utilized. I was assisted by Bandile who failed to request for the refund after I had sent her my bank statement which showed the purchase, yet she said the TAT is 5-24 hours. I called again on the 29th and spoke to Matshidiso who dropped the call after the security check. I called again and spoke to Palesa who logged the call after I had sent her my bank statement and she told me to wait for 72 hours. I called again on the 03/08/2020 and promised an escalation will be done but nothing has been done. I called again today and spoke to Matshidiso who again released the call after doing the security check. Telkom is useless and the worst service provider and I would like this to be resolved immediately. My contact number is ***.