CANNOT GET ACCESS TO MY GOVERNMENT GATEWAY ACCOUNT

have you got an email address to contact government gateway service , because i am locked out of my government gateway account & it has my old phone number listed to send the verification code to, i cannot update it without logging in & in order to do that it sends a verification code to my old phone number. 2 of the contact forms online are both offline & when i contacted hmrc they said they could not help even though hmrc comes up number 1 on google for "contact government gateway" i need my old phone number changing to my current phone number, or the verification method changed to email.

Hi 
You can get help reaccessing your online account via the digital assistant here:
HMRC online services: sign in or set up an account
Or by contacting our online services here:
Technical support with HMRC online services
Thank you. 

i have already done that multiple times, i tried it again today, it eventually leads to a page that asks for proof of identity, such as a passport or driving licence, i do not have a passport & when i previously put my driving licence in it had expired 2 years ago & so it would not accept it, the rest of the options do not apply because i am on universal credit, i have asked the DWP for help multiple times but they said it has got nothing to do with them & could not help.