Application declined no reason given / no feedback

I'm a new customer trying to apply for a new contract phone but I'm not getting a good service. I app**** for the phone at Trade route Mall on the 11 July 2015 and i followed up almost 5 times trying to find out about my application and every time i call they say i must leave my details and they will call me back but no one has called me, when i called today 20 July 2015 i was advised that my application has been declined and no informed me and they can't give me the reason why it declined can someone please find out the reason why the application was declined because the lady from the shop advise me that may be its my credit scoring or that i can't afford it but she was not sure.<br> It's not the 1st time I've had a contract I'm change because of the new area that I've move too so I don't think it's a matter of affordability or scoring. <br>