bad customer expierence

there was special for a sleepmaster and smartphone infinity for 6999.99 until 6/09/2015 advertised on bradlows website. I app**** online at mabopane central city on the 5/09. Daniel said I mst come to shop on sunday morning and wen i arrived there the shop was closed. I called Daniel he said he spoke to manager they ll do the deal for me, I advised them I ll come to the shop on Saturday 12/09.I confirmed with tshepo, manager, on Monday he told me he ll still do deal for me.on 10/09 I went to shop to sign my deal. tshepo was nt available I went there again on Friday. wen I got there Daniel told me tshepo said I cant get my deal wat they can do for me is to give me 500.00 cashback. I was disappointed. they said they dnt have phones. I saw infinity phones in the shop. how can I got there twice not telling me they don't have phones at the end. y didn't the tell em in the beginning. I drove more than 15km for 2 days. my efforts and fuel is gone down the drain because of bad service they have given me.