Wrong bank details given on self assessment form

The bank details given on my self assessment are wrong with 2 numbers wrong way round, hence not receiving the refund. How do I go about changing the bank details ? Repayment says issued on the 1st May My telephone number was not on my SA account but as from today is.

Hi,

If the repayment is now showing as issued, please contact our Self Assessment team who can advise you further.

Self Assessment: general enquiries

Thank you.