Domino's Pizza

Placed an online order coupon pick any 2 or more 5.99. for 1 pepperoni and 1 hot wing, and a 3 topping pizza that was supposed to be on special for 9.49, what I didn't realize was the bone-in wings were extra. My order came to $40 and some change with delivery. Pizza came, it was 2 pepperoni pizzas and 1 hot wing. I went back to the computer, checked my order and then called. Unfortunately, I backed out of the order window to find their number and while on the phone with Domino's my order mysteriously changed to 2 pepperonis and a wing for $30. So they decide what I get to eat? I order pepperoni for the kids, so thanks for nothing Domino's.