Hello, I have a situation where a deck contractor performed work on my property (deck replacement). Our agreement was via email exchange, text exchange, and verbal communications. Within that, the only 'document' was the estimate for scope of work and the $$ total, but for no particular reason this document wasn't signed by either party. I paid $7,000 as a down payment (~75% of the total for the agreed scope, which in hindsight is a very high down payment). The work performed was poor and nowhere near the level of quality expected or "promised" (via email and verbal exchange). He refuses to fix the issues, but still wants full (or at a minimum, additional) payment.