Account closure paid up letter Cell C

I paid my account with these people in full and canceled my contract in time and my profile is still open after two years I tried calling them spoke to busiswa and she told me some 1 might used my profile this is ***** I don't know Cell C does its business with clients now my credit background is not good cause of them an i even have proof that I don't owe them a thing thts the sad part, I hat this company I don't wanna ****