He's a bullshyte merchant giving you two fingers for the fun of it.
Any reasonable webmaster wouldn't want the negative exposure, he's probably getting a woody messing with you. This guy looks like he's relishing the attention, is a repeat offender and won't comply easily.
I throw in a few ways to complain. If the webmaster's a dick he can ignore or refuse but don't let that put you off. Usually vanilla webmasters don't want investigation, but he's an adult escort directory hosted in the USA which could be dicey as Backpage, Eros and Craigs List have found.
Just have a nose round for these phrases on the web for 'how to do' guides with free templates pretty easy to do
1. Cease and Desist letter- to him
2. DMCA Takedown Notice- to his website host
3. Complain to 'Google Search' who may block the page from being seen- check out- 'Google Legal Removal Requests'
4. IRS- Two things in life are certain 'death and taxes' the US Internal Revenue Service want their dollah. As Mr Al Capone and sweet old lady, Martha Stewart found out. They can investigate the shtye out of you backdated many years. USA Adult escort directories may be low hanging fruit for them. Who'd risk an audit for the sake of some stranger's tits and ass photos? Browse the IRS site for creative inspiration for replies to copyright bandits. Possibly a last resort in terms of threats.
5. FBI- The men in black closed Backpage, you can see their funky badge 'sealing' the site if you have a peek. The FBI raided Eros website twice removing their computers and scared off other USA escort directories. Browse their website for inspiration as USA hosted prostitution directories are in a tricky position there.
The FBI won't be interested in stolen ho pics, but may be curious if the content implies underage stuff or if the webmaster's involved in pimping, money laundering etc He'd be off his nut to ignore a 'threat' of FBI involvement as they can do stuff like kill his website or freeze his bank account if he's a dodgy geezer. It wouldn't be a pleasant thought for most webmasters. A browse of the FBI site may help you to get creative with your reply to Mr Wrankings. I'd say this is a last resort too.
With British adult webmasters I've used a single Cease and Desist letter which is a warning to sue. I throw in a nice sweetner...a daily fee of £100-£500 per photo per day. Photographers do this all the time. I tell him he must respond and confirm removal. I give a 3-7 days deadline. One webmaster removed the images in 10 minutes and rung to apologise! But Mr Escort Wanking seems to get off on confrontation so maybe a mix of techniques may be needed.
Love to hear if you get any joy!