Who called from 6104797900

The company appears to be from Wayne PA outside Philly.

Same as the above comments. The phone rang once, then went dead with this number on the caller ID: 610 479 7900. I'm glad you left comments, or I would have researched it. I've had calls from them, before.

Same story, they call me every other day, and no one's ever on the other line.

I kept getting these calls as well, but this time I caught it. I know who it is: Happy Lawn, Inc. - http://happylawn.com/

Thank you TL. Happy Lawn is my lawn service and I've received calls from this number 4 times this week.  No on is ever on the other line when I answer. I'll be sure to cancel my Happy Lawn service as soon as the contract expires!