Contact Whirlpool...call the president every 15 minutes if you have to. PAY THEM NOTHING. Unless you ran your drain in such a careless way that the machine couldn't drain properly. He said your water caused it??? Not unless your toilets flush directly into the machine. Perhaps the drain pump isn't up to snuff. I'd go as far as to have the water tested independently if I had to, but they wouldn't get a cent.