Poor Customer Service - MTN

Made an overpayment to my account on the 7th august 2021, and requested a refund. I submitted a request for a refund on the 10th. To date MTN has still no refunded me.

They have requested for bank statements, proof of payment etc, but still no refund. I spoke to over 7 different consultant the past few weeks who all said they have escalated the issue.

The initial query reference number is : ***. Some of the subsequent reference numbers are, ***; ***; ***; ***; ***; 1-***; ***