If you find a legitimate hacker, you'll quickly be free from the dangers of a blackmailer. In all honesty, you can't trust any hacker unless they demonstrate to you that they're safe and legitimate. You can trust no hacker but cyberphere. You can contact them via their website or do a google search for cyberphere to find the appropriate assistance; all of their experts have been verified, so you can be confident they'll handle the matter professionally.
Tips for customers:
File a case with the online representative on their website for a prompt answer.