MTN SERVICE LOSERS.

So since I had my contract i always paid via EFT never one pyment late. I wanted to make a call and a recording informs me that my service are suspended. I phoned MTN and was told that there is an amount of R55 outstanding. I then paid R57 into the account. This morning my line is blocked again. I think MTN must cancel my contract so that I can get a service provider thats willing to provide a service.