Failing to validate my bank account

Im trying to withdraw from one of my investments, I sent through a request on the 11th to capture my banking details so the proceeds can be paid into this bank account. EE sent me an email requesting that I provide a bank statement / bank account letter confirmation, I sent this through same day on the 11th, The process should take 48hrs. 48hrs has elapsed and EE hasnt provided feedback. I cant withdraw from my UT