Call to the cell phone, late in the evening, did not recognize the phone #, did not answer the call, I hit the Ignore button, and Phffffft! They were gone! They left no voice mail.
I never, never, never .... never, answer calls for which I do not recognize the phone #.
If it is a worthy caller, they will leave a voice mail message with pertinent information which will entice me to return their call.