I was linking my PSN account to my 4-year-old Bungie account yesterday and when they linked it created a new account and I lost all my code redeemed rewards. It does not give me the option to recover the account is there anything I can do to get it back?
This can unfortunately occur when, instead of using the link to sign in with an existing account, the link to create a new account is used instead, and existing account information is used.
This link shows the account linking and recovery process:
https://www.bungie.net/en/Help/Article/12130
Unfortunately, if the recovery steps do not function for your situation, there is no means of otherwise linking or recovering an account.