Who called from 4097508013

I just answered the phone, ID said Texas.  Phone just clicked when they hung up.  Don't think it could be a collection agency.  I have not debts.  Just irritating.  It was busy when I called back.

Don't know if this came through on my cell phone or was a forward from my office.
I'm just going to block the number from both locations.

Got a call today from Galveston TX, and like everyone else in here i got the dial tone after I said hello twice. I am so annoyed by people who call and hang up. Called back and all i got was a busy signal.

Didn't leave a message and didn't call back.