Gmail — gmail not verifying my ac

Address:

Etah, Uttar Pradesh, 207001

Sir,
I forgot my gmail password and trying to reset it but it is not verifying me after giving all the proofs my gmail ac is [protected]@gmail.com
Please help me or provide me any helpline line no. Of gmail. It is very important ac for me all my important mails comes to this ac and it is connected everywhere i have tried toreset many times but it is showing (Google couldn't verify this account belongs to you) after giving all the proofs it is not verifying me. I will be thankful to you.