Gmail Prime registration: After that, if you still haven’t found a solution to your problem, you can create a new topic. This requires you to sign in to your Google account and publicly post a question to the forum. This allows any other user to reply with a relevant solution and if you’re lucky, a Google volunteer may assist you further. If you have any compliant or looking for any assistant for gmail not able to contact, it is because you might not know the real way to contact Google team for help or complaint. If you are not having any urgent issue and can wait for some time then you can find the answer usually by posting questions on Google Product Forums and you will get the response from any of Google employees.
http://emailcustomer-care.com/gmail-customer-care/