I have had scam calls and they have asked me to press 1.
I never do, as I think that they can then do something such that calls to a premium line are then billed to the telephone bill.
I always leave it five minutes then dial the freephone number of a well-known business that always answers with a recorded message, just to make sure that dialing anywhere does not get routed to the scammers.
Some years ago, suddenly one day in my email account I got messages from various genuine mailing lists stating that my email had been blocked for spamming. It appears that some marketer had put my email address as the sender of his or her mailings.
I used to often get emails from Canada advising me that I could get my prescription filled much cheaper in Canada than in the USA.
I did not take up the offer, as my prescriptions are free courtesy of the NHS.