unfair allegations

I had an account with Nashua Mobile for years and then last year my contract ended and I didnt want to continue with them,anyway they kept billing me even after the contract ended,then one day I just decided to get to the store to enquire about the situation and to my surprise-their store was closed and there was no notice or report,A security in the mall advised me to enquire in VODACOM,Which I went to straight away in Fourways-The consultant answered by saying they have no record of me.Now six month afterwards I get a phone call from some call centre saying ALTECH AUTO PAGE has taken me legal for R1904 which apparantly I owe Nashua.Firstly I owe Nashua Mobile nothing and secondly no one ever from this so called Altech page has ever contacted me,I basically dont know them.This is so unfair and that is why Nashua Mobile has closed down for being ****** and everyone associated with them will close down and that is fact-Just a matter of time,No one play with my name/Thats my future you dont play with it and think you will succeed.Am a fool never spoken to one at that place and just to be told you owe us-I have greter things to do with my money not to feed a bunch of ******!!!