Hey guys, I have a customer that I plowed thier driveway this winter. They once were 2 months late on a payment, and I waved the late fee. They conviently paid thier oustanding bill the day of a big storm, because otherwise they would not of got service. And they left me a message saying to take care of the place until the end of the month, because after that was sold. So we get one more storm, and I plow it. Send the invoice, no response. Official Payment due date is March 5th. But I dont charge a late fee until at least ten days late. So on April 1st I access a late fee, a whopping $5.25, and send another invoice asking them to pay to keep it out of collection. Mind you they never gave me thier forwarding address, so I send it to the old address hoping they have the mail forwarded. Well today I got the payment in the mail, with no return address listed, and they enclosed the amount of the service, and the original invoice (not the one showing the late fee). I have to assume that they did get the invoice showing the late fee, but that they still had the old one sitting around, and did not pay the late fee on purpose. This just totally pisses me off. I know its only 5 bucks, but do you guys think I should send them another invoice showing the current balence outstanding of $5.25, and include another late fee if they dont pay it within 30 days?