Received this call  on 2007Jul20 at 0916 hrs MDT in Calgary.  While I am originally from Florida and did live in North Miami Beach, that was in the 60's and I was 11 years old.
Phone number originates from(Googled):
Newport Beachside Hotel & Resort
16701 Collins Avenue Miami Beach, Florida 33160
Phone: 305 949 1300  
http://www.newportbeachsideresort.com/specials.htm