Who called from 6318984183

Called number back, it goes right to tmobile

I get a call from this phone  number at 8:00 am.  They don't leave a message.

Called twice today. Leaves not message.

This is a semi-anonymous cell phone (displays only a number, but not name),
hence I don't answer.

Does anyone know if these scam callers have a way of preventing their number from being blocked?  I have blocked this caller, and the call still goes through.

What method, device or service did you use to block the caller?