Who called from 2036821199

this number has called me three times in a 20 minute period on my cell phone. i wouldnt answer and they wont leave a message either GRRRRRR!!!!

This number has called 3 times.    No message obviously a bot don't answer it.

They just called me three times too, didn't answer, no messages left.

I had three missed calls 5 minutes apart between 12:54 am and 1:05 am.  I'm very grateful that I had silenced my phone for a meeting and forgotten to turn the sound back on.  No message and just a busy signal when I try to call back.

Received three calls exactly 6 minutes apart on my mobile phone. There was no message left on my voicemail. I am listed on the do not call list so I am unclear as why I am getting these phone calls.