On my last delivery tonight the special notes stated that the GPS was wrong and where the actual address is located. There are 2 roads with the same name. I read the special notes and had no trouble finding the correct place to deliver using Google maps. 

 When I got there the customers met me at the door and said that a driver that had just delivered to them from Grubhub asked them for an extra charge because they had to drive around. 

Never pay a so-called extra charge unless you are speaking to a Grubhub or whatever app you use representative on the phone. Even then it is more than likely not the customer that will have to cover any 'extra' charges the company will. 

What that driver did is called a scam. It is illegal as it is a con.

The customers were an elderly couple. 

If someone does this to you immediately call the app company and let them know.