Customer Support can assist in recovering Battle.net Accounts if provided with necessary information.
Troubleshooting for BLZBNTBNA00000A8E (2413)
A disk error occurred while loading a file required to log in.
Troubleshooting steps for if you can't claim a gift
What to do when getting an error that the Battle.net Account has logged in somewhere else.
Your login attempt has timed out. Please try again.
What to do if you cannot accept the new End User License Agreement
Troubleshooting for error Code: BLZBNTBGS0000020A