I have an apple watch... it doesn't solve the problem that if I answer a call that is not from a contact, it is 9/10ths spam, so I simply don't answer calls not

I have an apple watch... it doesn't solve the problem that if I answer a call that is not from a contact, it is 9/10ths spam, so I simply don't answer calls not on my contact list, and thus sometimes miss important calls from businesses that don't text.