Imagine early in the morning, passing the toll booth as usual, seeing a sour face (as if we the toll payer owed them alot or someone has died). I have encountered many of them, the way they collect the money, it's darn rude. It's like they are snatching the money away. Rude rude, very rude.
I have come across just one or two who are really courteous, saying thank you & smile. It's just great being greeted & treating this way.