We rented a machine for earthwork performed on a project. This machine broke down several times causing us downtime while they fixed the machine on the jobsite. We cannot bill the customer for repairs not caused by operator error, but the equipment company is charging me and threatening to place a lien on te property if I dont pay. I do not feel these charges should valid to me, much less the customer when the machine that I am renting/leasing broke down and it was not due to operator error. The reason for the equipment breaking is not in dispute. p