MTN HELP ... your employees are letting you down

On 13th May 2020 I sent initial request and on 14th May confirmed I would like both phones to be converted to pay as you go. After much frustration (16 days) I have managed to convert 1 phone to pay as you go (this still has happen on 16 June) and the other phone has been upgraded to two different packages without my consent. Now they have cut off our cellphones on 1st June as we have not paid even though my contract cycle is from 12th - 12th of the month. I am at wits end .. No one replies to emails, if you do speak to someone absolutely nothing comes of that conversation. There is no one you can escalate your call to ie there is absolutely NO ACCOUNTABILITY. You end up with a whole pile of Reference Numbers that all relate to the same call logged