No feedback on UTR after create the Government Gateway account

Hi, My wife and I create the Government Gateway account separately in mid of July 2024, but so far I still waiting the UTR from HMRC. I have make a call to HMRC hotline via phone early September, and the reply from HMRC is to wait for the reply. I will not in UK for three to four months after November and I am afraid it will affect our Self Assessment Tax Return process. Is there any feasible way for me to complete the Self Assessment Tax Return and without the UTR number. Thank you.

Hi WH,
You will need the UTR to submit the Self Assessment tax return.
If you have still not received the UTR then you will need to contact HMRC to review:
Self Assessment: general enquiries
Thank you.