Who called from 2539840622

The female caller asked me if "(my number) was a business."
I replied with " who is asking?"

They hung up.

The person calling me from this number said Hello and when I said Hello again, they hung up...

This number calls 3-4 times almost every day !! I NEVER pick it up, and they NEVER leave any message! IF it's a collection agency, you would think they would leave a message!??

calls, no message, no idea who. harrassment.

This number has called several times and does not leave a message.   As I do not have caller ID, I have to dial *69 to find out who is trying to reach me.    Very annoying and expensive.  I tried calling back and I either get a busy signal or the phone won't ring through.    Quest say's they can't tell me who is calling due to a privacy issue.   I said what about MY privacy?!   Who is Quest serving and protecting in this situation?