New Contract - S6 Edge

I app**** online for a Samsung S6 edge contract last week. I was called told of the T & C's and all went well.<br> <br> Today I'm called to say its declined due to bank account - this can never be the issue, I have spoken to my bank and all is in order. The agent was unable to tell me what was wrong.<br> <br> I need the phone by Thursday as all was approved, please can you assist me urgently.<br>