global services claim that i owe money from a payday loan from 2012 from triple services they called from a number in midvale utah utah

my brother recieved a call from a company called global services he said the number was from midvale utah it was 801-733-7464 they are trying to claim i owe some money from a pay day loan through a company called triple services from june of 2012. i just recently changed my phone number so that is probably why they called him but i never give any one his number this really upsets me because they have no right calling him at all and harrasing him to get a hold of me weather i actually owe the money or not i also cant understand why they would think i do because i took out a chapter 7 bankrupsty that same year and everything was discharded this is a real nightmare. i really would like to know how to stop this problem for good also if i really did owe this money why would they not mail me any kind of documentation that proves that i do i have the right to have that documentation and i never have seen anything.