Back in 2004, my mobile service provider were charging me in correctly for pay monthly account. They were charging me for 500 free minutes but I remember my contract was for 600 free min. I spoke to them back in 2004/05 to send me a correct bill which I can pay and I refused to pay the incorrect bill.
They never sent me any correct bill but sold my account to debt collector. Recently in 2011, that debt collector has successfully got a CCJ against me which I have recently found out by looking at my credit history.
I made a mistake by not replying to the letter which cour