Telkom - line cancellations and migrations

Telkom has been providing a service with good value for some time However, it has become ridiculously difficult to cease a mobile number, to the point where it appears no one is actually able to change it that I dealt with, though if that is the case it should be referred to someone who does know.

Therefore I end up still paying for a number 7 months later when I was assured it would be billed last 3 months ago

If this persists, I will consider simply cancelling all numbers in one go. This when the cancellation actually comes from the inability to upgrade the said number... also because no one knows how after it migrated from another person.