I really hope so. I stopped answering calls from unknown numbers until a year ago when I got a call from the same number twice and it was a paramedic calling to let me know my wife was in a car accident. She was awake enough to remember my number but her phone was lost.
So now I can't help but answer calls from unknown numbers even though I know 999 out of 1000 of them will be spam. It's abusive and an incredible waste of everyone's time and energy, not to mention in my case I wasted 10 minutes of critical time I should have been with her at the hospital.