MTN Pathetic Customer Service

Im am beyond disgusted with the customer service provided by mtn. My contracts (2) was due to end by the end of June 2020. I gave notice on 8th of June to cancel my contracts by end of June and migrate both numbers to mtn prepaid. After numerous emails whereby they confirmed both contracts are cancelled, i still received a bill for the one number after it was said that contracts are canceled. I was forced to communicate via email due to covid and because phone service does not answer. For some reason they only migrated one of the numbers and the other is now suspended because i refuse to pay a contract for which i gave sufficient notice to cancel. I visited one of the stores in Paarl Mall and even when one of the consultants phonedbthe retentions department, they did not answer for 1 hour which i spent my entire lunch break at mtn waiting for assistance. This is utterly pathetic! I refuse to pay 2 months installment for which i didnt even use airtime as i am with telkom now.