CELL C IS HANDED OVER TO LEGAL EVEN IF YOU PAY ON TIME FOR 24 MONHTS

I PAID 24 MONTHS ON TIME EVERY MONTH - I HAVE THE PROOF, i cancelled my contract on time for the cancellation after 24 months, i phoned back to make sure all 100% and no more debit order will go off my account, THE CALL CENTRE AGENT JABONELO TELL ME I AM HANDED OVER TO LEGAL AS I HAVENT PAID MY ACCOUNT IN A VERYYYYYYYYY LONG TIME AND THEIR IS NOTHING SHE CAN DO FOR ME. I TRIED TO GET CELL C TO FIX THIS FOR 3 DAYS NOBODY NODOBY GOT BACK TO ME, maybe i should get the news involved, as all my paper work with me. HORRIBLE SAD SAD SERVICE