Want a free donut when you purchase a medium or large beverage? Just go to the website and take part in the Dunkin’ Donuts customer survey, you can get a coupon for a free donut. How to Enter The Dunkin’...
If you have received a Dunkin’ Donuts receipt with a customer survey invitation, you can go to the website to participate in the survey. By completing the survey, you can leave your own comments or...