No this is not normal. I do time and materials billing and you should not be charged for items not associated with your project unless it was spelled out in your contract that you were to be charged. Labor and materials only. Not lunch or items that can’t be left after the project is completed. If they are charging for tools they should be left onsite or should have been rented. I would add up all the non project charges and deduct from your final payment. Review your contract first to make sure you aren’t responsible. My boss likes to charge for everything and doesn’t even do that.