MCDVoice – Buy One Get One Any Sandwich : McDonald’s Conducts an customer satisfaction survey in the name “MCDVoice“. Customer who are interested in enter into monthly sweepstakes could participate in the survey through the official website URL : www.Mcdvoice.com survey. In-return, customers could get Sandwich (Buy 1, Get 1 offer ) as a bonus for participating in the survey. The Customers who have participated in the McDonalds survey are eligible to win sandwiches respectively. MCDVoice has made it simple for customers who are interested to enter the monthly sweepstakes to improve your chances of winning free Sandwiches every month. The MCDVoice Survey is organized in such a way that even a kid can go to www.mcdvoice.com within 7 days. Buy 1 Get 1 on any Sandwich is applicable in the customer survey given on the official site of mcdvoice will make them understand the customer satisfaction levels. So that McDonalds might try to improve their products and services.