Every day I get at least 5, and I just hit the button to block them and report as spam. I don’t want to reply to the messages since that will probably only make it worse. Is there somewhere I can register the number that’ll spam them back or something?
Edit: legal suggestions only, please


Add your number to the do not call list, if they don’t respect it, there are huge fines
There’s a political exception to the Do Not Call law for politicians, put into the law, believe it or not, by politcians. (US context)
Hahahahahaha