Missing Part

There is nothing as frustrating as buying a camera and outdoor kit only to discover you are missing a part and cannot complete the installation.  To make matters worse, try to find a "Replacement Part" area on the SimpliSafe website.  You won't find it!!!  So I spent over $500 on a system that offers no replacement parts and I have a camera that is useless because somebody forgot to put it in the box.  

I get that mistakes happen but what is the deal with not offering parts.  Feels a lot like thanks for buying out stuff, but if something goes wrong just buying the items all over again.  Not feeling good about my choice right now.