I never answer a call from a number I don't know. My mom, on the other hand, (84) will answer EVERY CALL that she gets on her landline (yes, still has it) and her cell phone. They're mainly spam calls but a few are people trying to scam her saying they're her grandson and they got arrested. Tell her to go to best buy to get $500 in gift cards to bail them out. WTF is wrong with people? Mom's cousin actually fell for that type of call and thankfully the person at best buy told her it's a scam.