Automated known scam with option to speak to person (threatening not to find website on search engines if I didn't pay them); Woman's voice, disconnected, probably after realizing I was the webmaster for the site.

Same thing as reported by Ken.

Same thing....they made it sound like the world was going to end if I did not call them back immediately. My website could self destruct and cats and dogs would live together

Human sacrifice.....dogs and cats.....living together.....MASS HYSTERIA!!

Same number called us,  we do not answer and only let the calls go to Voicemail so then we can return customers' calls when we are able. I am sick and tired of getting calls in which no message is left and I'm forced to google the number to see if it is a real lead only to find it's JUNK.