Telkom refusing to refund me my money, Account up to date and in-credit ..

Made a payment to my Telkom by mistake on the 07th of October 2020 and my account was in-credit with the amount paid, i have requested for the money to be paid to my bank account under case number ***8 as my account was never in arrears and they are debiting from my bank account and debit order are going through successfully . Telkom requested me to send Proof of payment which i did and still today no money in my account. been calling the useless call Centre and sent thousand of emails to *** and *** which they requested the proof of payment and they decided to go quite and not respond to my emails, this is the worse service.