bad service

Some1 used my id and opened up a woolies account somewhere around February 2014. I got smses frm woolies tht I need to pay up an amount of R1000. I went to the store I filled up a dispute form at the store and thy investigated the mater and found tht I dd not open an account. And tht account has been closed. Whats really frustrating is tht MBD keeps on phoning none stop tht I shud pay up R3000 nw. For what? I have no idea. When I told them tht I do not have an accout with woolworths a rude consultant said to me. MAM THS ACCOUNT IS WITH US NW NOT WOOLIES. Today 20/08/2015 I went to the store they checked and told them tht I dont owe them anything. Its so surprising how some companies wants to eat up our moneys tht we are working hard for. MBD proudly told me tht I will b blacklisted if I dnt pay.