The phone calls have stopped now emails.
This the website's "who is"
https://whois.domaintools.com/newholidays.co.uk
The website has nothing listed in Spain, except a dentist, most European countries not even listed.
Blocking this email address on the server, so hopefully we will never hear from them again.
newholidays.co.uk
newholidays.co.uk
Never try to out-stubborn your guests.