Vodacom Tablet

On the 5 March 2015 i contact most of the Game Stores as I wanted the tablet that was on special and spoke to Shameegah at Game promenade who advised me that they still have stock. I then went the afternoon to the store and when I got there she advised me that they don't have any stock left ,but i can do the application and she advised me that it will take about two days. Up to now I have been following up with them and every time i phone they promise me that they will call me back which they did not do. this morning I phoned again and Shameegah said she will call me back. She then call me back to advise me that the contract has been decline by Vodacom ,but could not tell me base on what.What is more pathetic about this is that I have been following up with them all the time and they don't even bother contacting me after they made promises that they will call me back.I don't believe that I was declined because my credit record is clean and the same time I app**** for this contract I app**** for a contract at Telkom and I didn't had any problems.All I need to know is why I was declined after a month of following up.