When I get a customer who turns me away I rarely bother to go back.
Cleaning several months ago - "are you doing mine today?" yes I said, "well I don't want them done" no explaination no apology nothing, just shuts the door. Month later she contacts my wife and requests I clean her windows because she was getting married that weekend, rollocks I told the wife, i'm too busy. She keeps asking but to be honest I really don't want to do them. Should I be more professional with the notion that the customer is always right or walk away?