Worst customer service experience

I'm not sure whether to give this company a any star. I have been battling to cancel a ********** account since last year without any success. I was called by one of their consultants to notify me that my account was in arrears, I told them straight away that I don't have have an account with them and it was for the first time that I heard about them. The lady by the name of Yonela if I'm not mistaken suggested that I should send a signed copy of my ID and an affidavit, which I did but that didn't help. They kept on debiting my account and I kept on reversing the debits, the next time I was called by their dept collector and I told them my story, they also requested that I send an affidavit and a signed copy of my ID, which I did again. To cut the story short, this month they have debited my account with an amount of R148, I'm going to reverse again.

I'm really disappointed and worried at the same time because I'm not sure how they got my details, perhaps they are a **** that is monitoring my accounts and then decide when to debit with a hope that I'm nit going to check. I'm also worried that they may damage my good credit record that a have worked so hard to keep by placing me in credit bureau. I am however prepared to fight to the end if that happens because I have all the proof that I don't have an account with them and I'll never have.