Me: You received the invoice I sent last week for the designs?

Client: Yes, but I don’t see why I should have to pay.

Me: You hired me to design them, you signed a contract, agreed to the spec, and signed off on completion when I handed over the designs.

Client: Yes I signed a contract, but I thought the designs were just to keep me motivated.

Me: Motivated to do what?

Client: Think about paying you, I guess.