PHONE BEING BLOCKED

I AM NOY HAPPY AT ALL WITH MTN BECAUSE MY PHONE IS BLOCKED AND THEY KEEP ON SAYING I OWE THEM MONEY ON MY CONTRACT.

I CURRENTLY HAVE 2 CONTRACTS AND I ASKED THEM TO CANCEL THE OTHER ONE BECAUSE IT IS PAID UP BUT THEY KEEP N SENDING AIRTIME AND DATA NOW I CANNOT MAKE CALLS OR ANYTHING WITH MY PHONE