I paid a full price $764.85 for a home security monitoring system. I made this choice b/c they offered the option of making a onetime payment to opt out from a monthly service plan. Now due to new additions my home I am in need of two door senses. Today I found that they deny my order as I am not in their monthly plan. Now I am vulnerable to any intrusion to my home as they are the only company who could program the two new senses to my current system. I think this is a unethical practise of forcing me there monitoring service as I wonder how hard would it be someone to sell something when the duly quoted amount is offered. ( they charged my credit card and sent me an email that the product was on its way and revered the order). They got to be some hard-up company to sell security monitoring plans. Lets all know this, and anybody got lucky suing these guys pls let me know. Thank You