Unable to cancel a contract that ended 2 months ago.

My contract ended end of April 2020 and i have been trying to cancel my contract without success. I have contacted MTN on soo many occassions and their service champions always put me through to their RETENTION department with nobody answering. I have been holding on for retention for over an hour numerous times to no avail. I have tweeted MTN and they have promised countless times to escalate my concern and nothing happened. I sent them an email and below is the response i got, needless to say it 7 working days later and nothing. I would never recommend them to anyone

*Dear Customer*

Thank you for your email.

Kindly note that a Cancellation or Cancellation enquiry can only be processed telephonically with An MTN Consultant.

An MTN Consultant will contact you within the next 24 – 48 Business hours regarding your request.

Should you require immediate assistance, kindly contact the MTN Retentions Department by dialling 135 from your MTN Cell phone Number

Regards,

MTN Customer Care - Retentions