Cell C appalling business.

My name is Tshepiso Diphofa, cell c had open a ********** account under my name two years ago and I reported the matter. It took its tall to get cleared up but eventually I got a clearance letter from them, however, I now receive a call from SSDA (cell c aternies) claiming that my account has been handed over to them becuase my account is over due with aroung R1,2k and this is damaging up my credit record and it is happing the second time. Cell C administration is very poor and appalling.