Hi,
Unfortunately recovery of deleted characters or items is not a service Bungie provides.
[url=https://www.bungie.net/en/Help/Article/12211]Deleted characters and items help[/url]
If you feel your account may have been compromised, it is highly recommended you set up or change your pass key for your account.
[url=https://www.bungie.net/en/Help/Article/12718]How to keep your account safe[/url]