My swimming pool contractor presented me with a bill for $11,000 for swimming pool excavation (in addition to the contract that pegs $30,000 for excavation). I was very surprised so I asked him for billing details, like how many hours, how many employees, how many hours using breaker bar on bobcat, how many hours using bucket, etc. He said he would only answer these questions if I had a meeting with him (I can't tell if he really means that he will only answer these questions verbally and will not put answers in writing--maybe, I can't tell). Can he not detail cost categories when requested? Do I have a right to get an answer to my questions in writing? Thank you.