I couldn't catch the name of the business even though I asked for it twice.  It appears to be Robert Team Realty (I googled the number).  The woman was obtuse and wouldn't tell me what the call was about when I asked, just insisted on speaking to the business owner.  I told her no, but what she could do was remove our number from her calling list and not call us again.  Hopefully she won't.  (Not counting on it though.)

get way too much calls from this phone number.  they never leave a message

They start call off by saying they are international diamond brokers. They say your address asking for confirmation to mail you info about their company. I said not interested and hung up. When I redialed number, says not in service.

Asked us to confirm name, mailing address and title (all of which they had already and recited to me). Wanted to know if we liked the proposal could we set aside as low as $1000 USD. Clearly a scam of some sort!

I copied down the number after some silence. Just collected our number as a business, I'm guessing. For a real call later.