Someone who never paid for a service way back 5 years ago (my 1st year) just so happened to call today to get an estimate. I didn't realize who it was until I looked up the address, now I'm just at a loss for words. Being that it was that long ago, I don't recall the exact amount, but I really don't care. The reason I never went after this customer is because back then I lacked the resources to do so... I suppose I could assume this person simply forgot to pay, but then why did it take 5 years before they called again... Meanwhile, the estimate is for work that I can't see yet, as in, future stuff, you know, something doesn't quite make sense here... On the one hand I've got a half a mind to really let this person hear it, on the other I'm not sure if never returning the call is any better either, but how do I deal with someone like this without getting rude about it?