BG does not support a user accessible phone number. If you need to communitcate with them you have to send a message using the Support connection. If you are a new user, you can find it on your dashboard, under GET HELP. Be very specific with your details as they may not respond to vague questions or demands. They have a system in which you send the message, including URLS if you have questions about specific images or pages, and they acknowledge it with a "ticket" number. Once they think they have resolved your issue you will get another message in your private email.
Hope this helps.