The App charged me more more than it shouldve

I ordered a pizza meal deal from pizza shuttle, and once my pizza was delivered the delivery girl told me how much it was and our prices didnt match up, she asked me if I had used the app to order, I said yes, and she explained that it is messed up with pizza shuttle, and it will always charge more for the delivery, and it doesnt understand the deal prices.
Convenient app, but I dont want to be paying more to use it.

steve743 about EatStreet Local Food Delivery, v3.0.3