Very rude and uninformed consultant

I received a call on 2015-04-28 at 08:40 from a african male who did not identify himself from a telephone no ***.Two minutes before that he called with telephone no. *** but the line was terible so he hang up I quess .<br> He greats me fine with my surname Mr.Mal..... ,he then says for the purpose of security confirm your date of birth .I glady do so . Then he tells me he is from Standard bank homeloans and he needs R3445 because I am owing. I am rather surprised and ask him from when and he says from 05March2015 .I ask him what is your name and surname them he starts being defensive and applying a rude to .I tell him he cant just say I owe without explaining the background especially the account no and the house ,etc .Also why am I owing .He is busy interrupting me as I a talk .I tell him for that matter I havent even moved into that house so ,why am I owing ? I told him never to call me and speak to me in a harassing manner without proper info.He was busy arguing so the coversation just got out of hand.I am really digusted because the developer finished the house 5weeks ago and told me they cant allow me to move in before standard bank pay them.Now this !