Sophia Scala-Domino's Pizza-1712048297

How do I get free pizza from the bay st store i bought 5 pies wait like 3 and was told every 2 orders u get a free pizza and never received 1.The coupon doesn't work I called the store they told me try it again press coupon amd never worked amd was never given my free pizzas!!! I am annoyed amd pissed off they told me om the phone we can't help u and pretty much oh well!!