Hi For my kitchen remodel my contractor had a $7k allowance for countertop install in his const. contract not including materials which I paid for in advance ($3k). Ironically once the install was complete he provided me a vague invoice for $7k exactly. I asked for a more detailed breakout which he provided 3 weeks later and included 18 hours of o/t was included which I never authorized- clearly backing into the number. with his subcontractor. Am I responsible for the o/t?