If you no longer have access to your Google account, you can follow the recovery steps on this link:

Steps to recover a Google account

If you really can't get back access to your Google account, the only solution is to delete the Buddies account so that you can create a new one. To do this, you'll need to fill in this form:

Account deletion form

If you are sure that this Google account is not yours and that someone else is using your phone number, then you need to fill in this form:

Form for spoofing my phone number