Why???

Why do they call it a drive thru if you are going to have to go inside anyway? EVERY TIME we go to a certain place that shall remain nameless, oh what the heck TACO BELL, they get our order wrong. So each and every time we get our order and try to be polite by driving up so that the next person can get their food we realize that we do not have the correct food and are no longer next to the window. This then means we have to get out of the car and go in to get them to redo the order at which point they never say sorry and never act as if they actually were the ones who messed up. Who knows maybe that little chihuahua from the old commercials is still in there somewhere and ate my nachos that they left out!