Who called from 2064369727

Multiple calls to my pay as you go cell phone.  No voicemail.

Answered an they just hung up

called 3 times. picked up the 3rd and they hung up

This is the third or fourth time this number has called. It is starting to get very annoying. The first couple calls where during the day but the last one was at 8:30 this evening. No one is there. But they hang up first.

seems like a computer