“I had never used a food-delivery service before Grubhub and wasn’t sure what to expect. The app was easy to use and once I hit ‘send’ on my order, I got regular updates on my phone. At first, I was told my order would be delivered by Don in 39 to 49 minutes, but the estimates continued to change – a minute or two less or a minute or two more – every time I updated the app.

“There is a feature that allows you to track your driver’s car, but the image of the car kept shifting from…