I once had a customer like that ... ask him a question, you'd never get a straight answer. What kind of work did he do? Why, he was a 'businessman,' he 'worked deals,' etc. He carried on like he was Donald Trump. In the end, it turned out he had a small dry cleaning business. Poseurs!
It amazes me, the arrogance of some. Without a seconds' worth of training or experience, they are instant experts, and have no intent of actually learning anything. I've had all manner of folk try to BS me into thinking they're lawyers, accountants, "connected," whatever.
Then, there's the chameleon. This is the person whose answers are determined by what they think you want to hear, what seems advantageous to them at the moment, what they think you need to know, and any other factor that has absolutely no relevance to the task at hand. "Where the bath mirror will be mounted," and how large it is, they consider unnecessary for you to know ..... then raise Cain when the receptacle is placed in the way .... even though they deliberately gave you incorrect information. Grrr.
That's why I focus on serving proven, reliable customers. That's why new customers pay full price. That's why others pay extra. That's why a few are refused.
My job, my trade, is to make the lights bright and the motors spin. It is not my job to play baby-sitter, sit in courtrooms, or stand around arguing. I have better things to do. Most important .... much as folks really hate hearing this .... just because YOU have a crisis, it doesn't always follow that I have a crisis. Poor planning on your part is not my responsibility. If your drawing shows two receptacles on the floor - and you wind up needing 10 at counter height - too bad.
Look at it this way: game playing at the start seems to guarantee 'extra innings' when you present the bill. A contentious job also seems to result in the maximum amount of come-backs and warranty claims. Even worse, the jackalope may encourage his buddies to call his latest victim - you.