Who called from 2103748285

i got a call last night at 3am. when i answered it hung up.  very annoying

Called at 5:26 a.m. I picked up; no one was there. Calling the number back is a recording. Maddening.

Called in the middle of the night - rang 5 times until machine responded -no message was left.  The same number called us again 7 hours later - this time we picked up the phone after a few rings and there was no one on the line. Can anyone identify these rude callers?

Called at 3 am.  They hung up when my machine answered. Called me back immediately. Heard one beep then silence when I answered.

This number has been calling me non-stop for the past several minutes. When I tried to turn my ringer off, it would start ringing again! It finally stopped when I angrily answered and it just "beeped".