Is the landlord liable for damages to my belongings?

I have a small business I pay to store my work vehicles at a storage warehouse that advertised 24 hour surveillance. Two weeks ago some equipment had been stolen from the storage site when we checked the cameras it only shows the gate entrance and the second camera shows their vehicles. The cameras that are mounted in our parking area false. A witness put one of the other tenants by my vehicles before the incident. That ended up costing me that loss. The owner said he would have the cameras installed so I borrowed the money to replace it and remained a tenant approx. five days ago we reported to the owner the the same tenant was back over by my vehicles. I asked if the cameras were installed and if they would talk to them and tell them to stay away from my vehicles he said ok and he was calling the company that day to get them installed. I replied if they don't get installed I would take my vehicles out and park them elsewhere because I couldn't afford another loss. Well 6 days later they did it again but this time they took everything and damaged other things on the truck when the police arrived for the second time in two weeks. They didn't even look for or take finger prints. We asked to see the video and they haven't been installed. Is the storage company liable for my loss one of there selling points is and I quote "you can rest easily knowing your property is securely stored."