Peadophile video blackmail scam

Hi, I usually just delete these email scams that claim they have compromising video and want £5k in bitcoin ransom but they getting me pissed off now so I want to get back at them. I’ve created a F**k off reply using a newsletter mailer just like they do, but the email addresses they send from are fake so they just bounce. Anybody got any tips on how to get to them? … thanks