Pathetic service MTN

Emailed MTN to cancel my deceased mums contract, consultant in error cancelled mine as well as the deceased. Been 9 days of me continously phoning and emailing with no joy. I have heard various stories from their end including that I am deceased. I resorted to going into a store yesterday and was reassured my phone would be active in 24 hours, no surprises it is not active. I am at wits end as to what to do now. They have stopped responding to my emails and I cannot phone in for 40 mins at a time...