Bad Practice

On the 26th of January my MTN Contract was suspended due to non payment. I then called the MTN call centre and told them that I only get paid on the 27th of the month, how could they suspend my account a day before. They said that the account payment is due on the 21st and the consultant then changed it to 27th on my request. I got paid on Friday the 27th of February, but forgot to pay my account, but I paid this morning 2nd March. However, my account has already been suspended. Don't they offer a grace period? I mean it's only been a weekend overdue. I am outraged. I sent proof of payment to the collections department as stated in the voice prompts of the helpline, but couldn't hold on for a consultant due to high call volumes. I waited on the phone for a half an hour before I hung up. I tried again later, but had the same problem. It's a good thing my contract expires next month, because I can't wait to go to another service provider.