Taking advantage of poor people

Hi my name is sbusiso nkosi there is a company called DMC 990 appearing on my profile that say i owe them R5500 of which i dont kno where is this coming from dated 11 jan 2016 i havent been working since 2012 my markhams acc was cleared longtime ago, I was chatting with someone called musa to explain to me i tried calling was unable to get hold of him/her to my suprise i received an invoice stating i must pay R4950 before the first of August, am not working since my last job 9 years ago only had part time job in 2015 this is very sad the last time i checked my acc was cleared make, CAN YOU PLEASE CLEAR MY NAME