Pizza job

Pizza delivery is a job of one man.He is a good man he never came late for his work or late by other reason.The owner of the shop never punish him because he always delivered on times.And his salary are the same like other man.He never has a problem with his customers.

One night the weather is rainy and he was driving his motor to deliver the pizza at 8pm. The deliver location was in southern town and was 7 miles away from the shop. He delivered all the times that gives him 1 or 2 dollar or what ever is left over.
He didn't care and he thought it was his destiny . He arrived at the location in the wet road and his dirty motor.He was pounding on their door because they are not answered the phone.
Then he called their phone 10 times with his cellphone right outside of their house and they still not answered
He couldn't take it anymore so he went back headquarter and his boss calls again and again so They answered and said they were there the whole times.Then he headed back to the house and They told him,''Next time you must knock the door harder''.He responded,''I called with my cell phone10 times,too''.They responded,''Oh, really we never ever answer the phone.It's always tax collector for their mother''.
Then he didn't said anything he just smiled and left with 38cent tip from their hands and wanted to yell,''why the hell did you answer it from my boss!.But he stopped himself.He never got angry like that day.

Fortunately,when he headed back to the headquarter his boss gave him 6 dollars more for his hard work job and the man was happy. ''I must be polite and respect to the customers and it also a part of my job too'' He said.