If you call the number back... It says u can press one to have your number removed from the preferred marketing list by pressing one.. Then it says u have been removed please allow up to 72 hrs.
This number says they are with Microsoft and that your computer has downloaded malicious software. They will ask for your banking info and charge you for what they say is a free diagnostic. They accused me of being flippant and rude when I acted glad to hear from them.