Employees drop 5's; residents drop 1's, sounds rig...

Employees drop 5's; residents drop 1's, sounds right. I moved out at the end of my 15-month lease and within 30 days received an invoice for over $850 in damage to the carpet. They replaced the carpet in the entire apartment even though the damage was only in the living room. The damage wasn't even bad enough to need to replace the carpet; the invoice grossly overstates the damage observed during the final walkthrough. When I moved in, the place was filthy, with caked dust on top of stuff, and flimsy blinds already showing pet damage. They had a contest in September for a big screen TV if you left them a 5-star Yelp review in their presence -- classy (read mine there if you're motivated). I have neighbors that have been battling pests since the day they moved in. They change their word; I had in-writing confirmation that the $400 amenity fee would not be an annual thing, but when my lease was up there was an amenity fee. I had to really press on them to get them to drop it even though I had the emails where they told me it wouldn't be an annual thing. They will not discuss with me how they came up with their number for the carpet, yet if I don't just pay it they will send my account to collections. I may just pay it and then sue them to get it back.