This number has been calling me non stop for the last few days. I unplugged my answering machine!

This number has called several times in the past few days.  I didn't answer, and they didn't leave a message.

Got a call from this number - initially heard strange noises on phone but no one responded - then a voice saying this is campaign research - unknown whether it was human or not; upon hearing the word 'research' I hung up the phone.

Get calls from this number all the time but they never leave a message.

Same phone 519 -916-5270 has been calling me for days few times a day. It's frustrating.