I must have tripped on some weird website? I started getting weird messages by phone and email.
Whoever sent that to you is a cockroach and deserves to be beaten to within one inch of their life.
Ignore and delete.Do not ever respond to them
Odds are you're not the only one receiving these text messages via your cellular device. I'd suspect that telephone number is also spoofed and just a feeble attempt to extort some money out of you and probably hundreds of others in the hope a few will actually respond. So your probably not alone in this scam.
You can either block the number and forget about it
or
if you feel this is a viable threat, report it to your cellular providers security department and your local law enforcement.