Unresolved Review

I am regretting having chosen MTN as my service provider. For years I Have been a loyal customer, and in a time of need of their assistance i am being neglected. A week later they have not responded to my review dated 27/07/2020.

Terrible after sale queries! I went in to upgrade one of my numbers on the 16/06/2020, the contract by default upgraded on a number i did not ask for. The consultant has been following up with higher authorities with to little to no feedback to cancel the upgrade. A full email thread can be supp**** and I have seen proof that the consultant has been trying his best in his capabilities to assist. Apparently the new system does not allow for cancellations?? so why was a migration done to the new system without testing everything!!! MTN has processed a debit order for the incorrect contract as well. if i reverse the debit order i will be black listed what option do i have if i am getting assisted? which must I the customer must sit with an inconvenience because of MTN's negligence?

I WILL TAKE LEGAL ACTION IF NECESSARY!