MTN ***** incident

I have been waiting for MTN to resolve a ***** incident that I have reported on 15 May 2021. To date (7 June 2021), I have received NO RESOLUTION nor FEEDBACK regarding the matter. Instead, they have incorrectly billed my account TWICE despite having informed me that I can stop the debit order from the bank. MTN has been really unhelpful in this. MTN please advise.