How to correct mistake on submitted form?

I completed a P55 form online in order to claim back emergency tax paid on a pension withdrawal. Unfortunately, I inadvertently made a mistake with some figures. Is there any way for me to contact HMRC to correct this? I’ve tried a web chat, but the AI didn’t understand what I wanted.

Hi,

You can contact the Income Tax team here:

Income Tax: general enquiries

You can also resubmit the claim with a covering letter to:

HMRC, Self Assessment & PAYE,
BX9 1AS
UK

Thank you.