No dinner Debonairs

I downloaded the app today to order pizza to qualify for the 20% discount Tuesday deal. I placed my order, but when I entered the voucher code for the deal DD8 it said that it cannot be used at the store. I checked out and called the store to query as it says any app orders qualify. They then said they can't help as they can not give the 20% even though I placed the order online. I spoke to a manager too. I then cancelled my order with her. 5 min later a person called to ask my address. When I said I cancelled he put the phone down in my ear. Then another call came in. The same manager saying the garlic rolls were deducted?? That is part of my order the winter deal. It is free already! I asked about the 20% off my bill. Then she passed me to another person! Dont anyone know their specials and deals. I had to speak to 4 people and ended up with only frustration for a meal.