Our client provided the wrong bank account number in his claim (only one digit out). He called the SEISS helpline and HMRC have sent a letter saying they cant help and for client to contact the bank. The bank are saying they cant do anything without a 'Forward trace' being requested by the Revenue. Revenue keep saying contact the bank. I keep getting advised that agent helpline can not help and being passed to SEISS helpline who keep transferring me to the agent helpline. Has anybody else experienced this problem and found a solution, please.... I cant stand listening to the music anymore!?