DirectBuy Owes me a free Android Tablet Stoneham Massachusetts

I received a letter informing me that I have been selected to receive a free tablet. When I called the number on the letter they said I must go to DirectBuy on 100 Fallon Road, in Stoneham, MA and listen to a minimum 90 minute presentation. When I arrived they took my letter, and we (my husband and me) waited with two other couples. We then suffered through a boring 90 minute presentation, once the 90 minutes were up I informed them I was not interested in paying $7000 for membership and monthly fees. They immediately became rude and mean, and directed me back to the front desk where the woman told me they are out of tablets they have been reordered. I called a week later and the women (Sabrina DeCosta, Assistant Director) still said they are on order. It is now almost a month and now I can't even get a hold of anyone via phone, and no one has returned my voice mail. I have Ms. DeCosta's typed and signed letter stating I visted and attended a DirecBuy presentation on October 11, 2014 and that she ows me a free Android tablet.