Loan approved & Declined

I app**** for a short term loan at Finance27 and was approved and the contract was sent to me via email, i signed it and waited for the bank debi check, when i checked the contract again, i saw that my bank details was incorrect, i emailed them my bank statement again, and asked to check my banking details. 30 minutes later i am being told sorry the loan declined. This makes no sense. This company is deceiptful