Hi Cadillac, I think you were right to stick to your guns- it was inconsiderate of him to blame you for his obvious mistake. He didn't read the manual and then tried to make you feel guilty because he paid his nanny. If you ask me, he sounds very patronizing. I know you said that he seemed nice in the beginning- but first impressions are sometimes not always true . This is a business relationship and he did not respect that- good on you for telling him to pay what he owes. I don't know any other business where people can cop out and say "Oh I missed that part"- you wouldn't see a cell phone company saying "Oh that's ok, just pay me next time"- Come on, let's respect ourselves as dcw so that parents can respect us too.