It sounds like Tesla's subcontractor is totally in the wrong. If it starts out this way how do you think the whole contract will go? The excuse given " because of more tear off than anticipated" is not good because its not even a reason. They contracted with Tesla and not the customer. In effect they are extorting you. I suggest you consider removing the sub crew from your property and insist upon a new sub crew. Furthermore, Tesla has a history of not inspecting the roof decking prior to start. One of the first V1 tile roofs had a metal roof, then shakes, then shiplap. Tesla did the right thing and converted over at no charge. Point being is these are mistakes only amateurs make in the roofing industry. You have full control and will have to make a decision. Best of luck to you..