No msg left on answering machine. Blocked caller

Keep getting hang up calls from this number, everyday at same tired.  No one there and no one answers.

Answered call , Stan was fund raising for police and sheriff's assn. Interrupted him to let him know we only gave locally , he politely said he would put our number on do not call list .

One ring & off to the corn field via TW blocking feature.

Answered & all I got was static...