I would like to know the caller

I just got a call from that number but no one said anything when I said "Hello?".  I said hello about 4 times then I hung up.

This is the number of a person who is recruiting for his business.  I suspect the both of the above were wrong numbers.  I talked with him and he was very pleasant and businesslike.  I won't give the name of the business because it is possible that this is his personal phone.