It sounds like you should be attempting to negotiate a bigger settlement with your insurance company so that you can take care of this problem. Either you should get enough money to do the whole house, or you should have more money to spend on getting custom siding made to match your old siding. It is possible that the insurance adjuster who looked at the problem initially didn't realize this. The contractors should be helping you advocate for the best solution, rather than telling you that they can't do what you want. You should solicit their assistance in identifying how much it will cost to match the custom siding up, or what the cost will be to do the whole house with new siding. If you need assistance negotiating with the insurance company, you can hire a public adjuster and/or an attorney to assist you. An attorney may hire a public adjuster at your expense. You have paid your insurance premiums, now go after what you are entitled to receive. Good luck.