The ruined pool filter story is a crock of crap. I've owned a large, in-ground pool with a DE filter for over twenty years, now. Lots of stuff goes into the pool and the filter catches it in the strainer and pump cup. If you dumped a load of sawdust into the pool, and I mean a ton of the stuff, it might get into the impeller and jam the pump, but that is cleanable. If it made it to the filter elements and clogged them, a back-wash would solve the problem or, at worst, the filter would need to be opened and the filter elements hosed. Big deal. A pool guy should do the job for no more than $100-150, depending on the market you're in. If the job had a high-end charge, and you have much to gain over the pool filter cleaning fee, I would definitely tell the :censored: that you are going to take legal action to recover the balance due after the pool is back in shape. Make sure you get a copy of any bills that are involved with the same. It is your right to fix any problem you are alleged to have caused, so don't let this weasel slip a couple of bucks to his pool guy buddy for an inflated bill. Bring in your own pool guy. Again, you absolutely have that right. If it is denied you, that will not look good for the :censored: in court, and you should recover.