Thought I had heard almost everything, but evidentally not! Have a customer with a signed contract for installation of new lawn. As is customary in our business, he paid 1/2 down with balance to be due after installation. Work was completed with no problem, we sent billing, now he says he is not paying until I give him written "guarantee" on lawn. Needless to say in the 15 years we have been doing this never had this mentioned. As I told the customer our word should suffice. My feeling is that the signed contract spells out payment terms and what happens when you do not pay. Just wondered if anyone else has had this experience and what in the world can I do to placate customer.