Gat a phone callbut left no message and the call back would not work

They called saying that I've been selected to win a scratch off that needed to be delivered by an associate to my home.  All they asked in return was 20 mins of my time to talk to me about their services.  It sounded very suspicious.  They set up a date for us to meet at my home.  I asked for a phone number, which they seemed to ignore my request.  But they did give me a URL address of : www.FFG2.com

Caller identified himself as an affiliate with Federal Financial Group.  Indicated our business phone was selected to win a scratch off ticket with prizes such as 7-day vacation trip, 27" tv or a vehicle.  Kept saying this is not a call to sell us anything.  As I grew suspecious, I let him continue his script. Finally aboutt he fourth mention of the call is not to sell I let him know that we are not interested and asked we be removed from their call list.  He hung up quickly.

missed the call ... no message.

Keeps calling our business asking for a manager.  When I say can I take a message they hang up on me.  I called the number back, and it goes straight to voicemail.  I called 801.495.2009 and asked to be taken off the list.  I told the girl that answered this is aa business, and I don't need people calling, and then hanging up when I am trying to get taken off the calling list.  She said they usuaully only call students.