They preyed on our family business and will say whatever they can to get their foot in the door. They become very rude once you make it clear you do not want to use their services. The biggest mistake I made was allowing them in our premises. Even after you finally get them to leave, they will keep calling you trying to get you to reconsider. They will use every trick in the book to get back in your office. Whatever you do, please do not let them through the door and train your staff to hang up on them when they call. They will lie to get you back on the phone!