wrong tax code

my employer is using the wrong tax code and has said I should contact HMRC for a P6, this is proving difficult.

Hi
If you contact our Income Tax department we can look into the tax code.
Income Tax: general enquiries

i have tried several times to ring but was hanging on for over an hour and sometimes getting cut off due to the call not being able to be answered. so is there any other option?

Hi. I have submitted the self assessment and got a UTR number recently. Today I got a letter from HMRC to remind me to submit my tax returns. However, my stay is too short to submit the tax returns and I do not need to submit tax returns for the tax year 2022-2023. Sorry that I could not reach your team by . Sorry that I cannot reach your team by email either. Shall I ignore the mentioned letter or shall I do anything to follow up, please? Many thanks.

Hi snowy osborne,
The contact options for the Income Tax team are listed here:
Income Tax: general enquiries
Thank you.