Who called from 7073010008

am i understanding that this is to notify you that you have a voice mail or that someone is checking your voice mail

I keep getting messages from a Dr Noblicks office calling for Richard, the only number that displays is the one above, so I can't call the people back and tell them to stop calling the wrong#.  This has happened at least 6x.

none

I've gotten a call from this number several times.  No message is ever left.  Who is this and why are they calling my cell?

I received a call from this number and it sounded like a 'butt call'.   No message was received and just people talking in the background.