pay back my money

My enquiry relates to the email I sent on 10 September 2020. It is with regard to the EFT payment (Bill Payment) I made on 09 September 2020. My bank has made me aware of the mistake I made. Instead of the reference number to reflect on my bank statement as your bank account number, I used my DSTV account number. It's been almost a year and I haven't received my refund. I've sent DSTV a hundred emails, including my bank statements. They remain unshaken.

Below is one of their responses.

Dear Dstv customer, Thank you for contacting Billing and Collection

Kindly send us a valid proof of payment ,which shows the date ,the amount paid, payment reference and the banking details into which a payment was made.

This is to help us allocate the payment made .

We will wait for your response .

You may manage your account by downloading the Dstv now app by clicking on the following link :https://now.dstv.com

Regards Stephen Senamolele Billing Escalations

DSTV: I WANT MY MONEY. PAY BACK THE MONEY! Customer No: ***0