I am a subcontactor on a city project for the city of savannah, I was forced by threat of claim against my bond to finish the project. Even though the project took double the budgeted time because of delays caused by others. All were aware that delays were beyond our control, but we were required to be on site for the duration. We submitted a change order for the time extention, but the prime is arguing that change in duration is not a change in scope, and that they do not feel that they owe for the extra time we were held to be on site or for any expenses incurred for the delays. This has severely affected our able to do business since then. We are owed Approxiately $160000.00, can you help? Lien is already in place with the county.