It is not possible to merge the progress of two or more games into one.
Instructions on linking your MLG and Blizzard accounts
If you're seeing this message, check your email for details about the violation and a link to information on the appeals process.
Information regarding the legality of sharing an account.
Steps for linking a Third Party Platform's account to your Battle.net Account.
Recovering a Battle.net Account when the email address has been forgotten
Information about the processing time for ELV/Direct Debit/Sepa payments.
What to do if the name on your account is "Adventurer"
How to permanently delete an account.