You can use this service to reset your Battle.net password, which will remove most account locks.

Information updating a guild name

Troubleshooting when a guild transfer, guild faction-change or guild name-change was not delivered after payment

Basic information about guild services.

Information about problems with guild names after a guild service

Troubleshooting for being unable to interact with your guild after a transfer of faction change.

Troubleshooting when unable to start a guild transfer, faction or name change and receiving an error

Information on inviting your own alternate characters to your guild.

What to do if you can't see your guild interface after creating a new guild.

What to do if you were inactive for a long time and another guild member took the leadership of your guild