- Change your password immediately if possible.
- Click hereto learn how to change your password on your PS3.
- Call customer support as quickly as possible.
The phone number to call customer support is:
You can view their Contacting Support page for hours of operation and additional ways that you can receive support.
Support Article I used: https://support.us.playstation.com/app/answers/detail/a_id/2057/kw/hacked%20account
Hope this helped!
Keep on gaming!!!