MTN South Africa - WORST EVER

One of the worst service providers out there, specially their accounting department. I have payed my account more than 11 days ago and yet my line gets locked every day, and every day I need to call their stupid call center be on hold for a long time and explain everything over and over. I have data thats expiring, so conveniently for them I don't get the chance to use it because my line is constantly locked. I wish that my contract can be cancelled but thats obviously not a option... sharks