We have a contractor who did not request permits for areas of digging outside on the waterline and inside on the sewer line. I paid him 50% of the work and he only completed 30%. We do not feel comfortable with him due to his belligerent attitude and unprofessional actions. Such as coming in our front door uninvited to try and divert my wife from speaking to a county inspector who was suspicious and uncomfortable with him. Can I terminate my contract if he did not request permits for areas of work he completed? He is threatening to sue so we are looking for the best option to void the contract. Thank you!