>>40927
Why would a blackmailer keep their word and keep your secret, instead of asking for more? The fact that they're blackmailing in the first place should tell you that they're not someone to be trusted.
All you can do is make it seem like you don't really care, that they don't really have power over you, and ignore them.
Or if you manage to get some of their personal info, you can blackmail them back about exposing them as blackmailers. If you can let their families and boss know what they're doing, then it's you who have the power.