Impossible Invoice Inquiries

Client: “The invoice you’ve sent me is wrong.”

Me: “Okay, I’m looking at my copy. What’s the problem?”

Client: “It doesn’t include the payments I’ve made.”

Me: “I don’t see any record of payment being received here. When did you make the payment and how did you pay?”

Client: “I wrote a cheque this morning.”

Me: “That you haven’t posted yet?”

Client: “Exactly! So why isn’t it on the invoice?”