No Customer support

I've tried everything now to cancel a contract that expired already and have been going month to month now. I've been to MTN Nelspruit on 9 July and they told me to phone 135. It didn't give me an option and I was told to speak to a MTN Service Champion. Where you find that I still don't know. I emailed Customer care and was even given a reference nr. But still nothing. I tried MTN Facebook Messenger and was told to email the Retention department. I did that, still nothing. Today I was told to email the managers at the Retention department. I did that and still nothing. It's been a week now. I have 4 contracts with MTN. 3 can upgrade soon. Will I upgrade... NO!!! Pathetic company. Quick to phone or let you know about specials but pathetic when it comes to customer support.