I was told $139.70 would be my monthly charge by Ryan who installed my system. Now your Billing Dept is telling me it is $146.29. Fortiva sent me an email saying it is going to be $151 monthly. No one at Vivint can explain why I am getting such mixed messages. I had to call your billing Dept back a second time today to get someone who was competent and I could understand. Very poor home office support!