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Hello, my name is ***** ***** I will be assisting you today. I don't know if you have tried this yet, but Google does have an account recovery form you can fill out. It is referenced in the following link:
I don't know if you have 2-step verification enabled, but there is some good information on how to get help in this type of situation.
The following link is also for account recovery. I expect you have already seen this, but here is the link:
Do you have a computer from which you can access the gmail account? This may help too.
This is Gary from JustAnswer. Just checking in to see if you need further assistance.