I have had a VIVINT security system for many years...

I have had a VIVINT security system for many years and enjoy the basic security portion of their service. However, when I upgraded and added security cameras this year - they are absolutely not reliable. They go offline without reason and seem to have no rhyme or reason as to what they record/store. Two service calls have not been successful in fixing the issues - but I am still charged for them. The billing for the upgrade has turned out not in accordance with what I thought was agreed to ... raising my monthly rate rather than paying a lump sum.