Who called from 9704584056

Or should I say, did they say why they were calling?

asked repeatedly for my wife, when i asked who is calling, they hung up

This number called one of my lines on my T-Mobile account. My son answered & someone asked for me. They didn't leave a message, & all I have is this number to call back. When I do call back I get an automated message saying  "thanks for calling, leave a message". No one ever answers when I call.

Calls at odd non-business hours, no message.

Said "Hello?" several times before the young man asked for my husband by name. Then when I handed him the phone no one was there. We tried calling back several times, but only a voicemail.