So, having an interesting situation here. Just installed 7 pallets of Bitter Blue for a customer yesterday. Wife oversaw the whole project and signed the invoice afterward that she accepted the work done. Said she'd have the husband send a check the next day. So I get a call today from the husband (turned into about 15 calls) saying that he found a few individual crab grass out of the entire front lawn. I apologized and said my guys must have missed them, said I'd get with the sod farm to get a few extra pieces and would swap them out. He agrees, but then calls the sod farm and asks the owner to come take a look at it. Sod farm owner shows up and the wife immediately starts attacking him verbally and screaming at him about the fact that his sod had a few pieces of crab grass in it. He apologized and said he was there to help and would exchange them no problem at all, to make her happy. She starts cursing him out, so he leaves. Now, the husband calls me over and over again after 9pm and keeps leaving messages threatening to sue us if we don't replace every single piece of grass in his front yard tomorrow morning. Said there's no way his wife even raised her voice to the sod farm owner, etc etc. I had it all worked out with the sod farm owner to exchange the few pieces that showed the crab, but now he wants the entire yard replaced, which isn't going to happen. I have tons of pictures showing the before (practically all dirt) and after (nicely done sod job) pictures of his lawn and have the wife's signature saying that she accepted the work done before we left for the day. I really don't think there's any way this is going to avoid lawyers, which is crazy. I have never once dealt with a customer that was this far out of control. What would you guys do?