If you have tried everything the answer is simple.
Don't bother as you will never get in.
After months and months of trying I have gotten nowhere.
The only answer I ever got back is use an online form no matter what.
Try to put in as much information as possible including guessing passwords you used to use but get not enough it wont work get too much wrong it wont work.
I have accounts all over the internet linked to my old email.
my youtube account name is the same as my email and I have had it about 6 years and in it I have videos of me. It doesn't matter what you say what you can show them or anything.
A user suddenly stops using their account at exactly the same time as a password error is made and then someone starts applying to get the account unlocked. The person trying to get access says they have accounts everywhere for years using the same email address and phone number and is happy and eager to prove it. for months the same the person keeps trying to get access and all the time the account is unused. the user has a paypal and ebay account using the same email.
They wont let me in as they are protecting the account from.............?
I don't keep bank details or passwords in my emails. my emails in my account are addressed in my name which I again have id for and my cv including my address is in there.
None of that matters forget common sense or making any effort they do nothing and never will help in anyway except to say I need to fill out a online form.
Try escalating a complaint believe me I tried that to no one listens they just close the complaint each time. 6 months later I no longer try I think they are useless scum and now use a different email