How to let HMRC they have the wrong tax code (when you've updated your Gov Portal)

Hi there, I got placed on the wrong tax code (BR) and despite having updated my predicted earrings, and the end date of my previous job, my tax code hasn't changed. This is an incorrect tax code for me but I can't seem to be able to contact HMRC to let them know.

Hi sophie Roberts,
If your tax code is still incorrect then you will need to contact HMRC to access your record to review the code.
Income Tax: general enquiries
Thank you.