My Playstation account has been hacked and at the same time I can't log in to my Sony account.

I do not know that you are procrastinating. Contact Sony Customer Support immediately and try to explain your entire situation in detail. Good professionals who know their business work there. They will sort out your problem and try to solve it as soon as possible. To save your time , I advise you to contact them at sony customer service . This is a proven way.