Why is my line suspended again?

I pay my MTN contract via eft monthly. Last week my line was suspended for 4 days because mtn was saying i haven't paid. I logged a complaint here on Hello Peter last week monday and was only reaponded to on Friday, asked to fax proof of payment. I struggled to find fax facilities but i did. I even emailed the proof to customer care and credit management. My line was unblocked on Friday in the afternoon.<br> <br> Yesterday in the morning i got an sms saying i haven't paid and my line will be suspended today. How on earth is this possible when i gave you proof of payment and you unblocked my line?<br> <br> is this a sick prank by mtn? Are you guys deliberately trying to make my life miserable? Why wasn't your system updated that I have paid? Now i can't get work done because mtn doesn't care about servicing it's clients properly.<br> <br> Please can you sort this out, correctly this time.