For the entire month of March (what’s left of it) Dunkin Donuts are giving away a free coffee on Mondays (that’s today and on the 22nd and 29th). You don’t just get a small coffee, you get a medium coffee, you don’t even need to make a purchase. The best part is that you can choose from regular hot coffee or iced coffee. If you want to find the nearest Dunkin Donuts store to you then use this store locator.
The free Dunkin Donuts coffee on Mondays in March is not know by the stores. They didn’t anything about this offer.
Check this out: http://view.email.dunkindonuts.com/?j=fe6017787166077c7011&m=ff001073736406&ls=fe0511707766047877167677&jb=ffcf14&r=0. You could print this out and then show them at the store.