Worst App Ever!!!

If I could give it negative -10 stars I would. I pressed redeem to get my free slush and it literally flashed on the screen for 2 seconds and then the lady said you dont have a treat, you already used it. I downloaded the app in the car right before we ordered it, so no I hadnt used it! I had to pay for my slush. It is a terrible app I wasted my time and my data downloading it. Thanks for nothing Sonic!

Keeeendra about SONIC Drive-In - Order Online, v2.2.0