Bad Service - Poor Management

I called MTN about 2 weeks ago to cancel my contract which has been with MTN for more than 10 years on contract and prior it was pre-paid for around 7 years (same number). When asked why I wanted to cancel I informed them I got a better deal at another service provider. They lady at your retention department (Damaria Matso [ MTN South Africa ] ********** asked me to send her the information cause she can do a deal match for me. I then had to email her for 3 consecutive days with no response even ended up calling again. When she finally got back to me VIA email only she back with a deal that’s more expensive. I have then requested to speak to a manager this was 23/10/2018 and I am still waiting…. Called again this morning all your manager was in a meeting still waiting again for someone to return my call. Very poor service