Poor Service and response

On the 25th June 2015 around 05h54am, I received a call from an ADT representative who advised me that my alarm system had gone off. I informed them that I was not in the house, therefore granted them permission to go & assess the situation. In about 10 minutes prior to my conversation with the representative I received another call from ADT informing me that there was nothing that showed any interruption therefore they advised suspicions of a power failure. I then relaxed based on those terms. The next day, upon my return I found that the house had been burgled. I noticed this as I was re-setting the alarm, I found that there was no power alert on the alarm sensor