Poor service

On the 22nd April I had a buglary at our house where a HD LED TV was ******. We have an ADT alarm in our house. ADT notified me about the alarm going on at house at about 12:50pm of which I told them to send a security to the house since there was no one. And upon hearing that the alarm was on I ran there, I was 5 mins away from the house. I got there first and guess what, the ADT security got to the scene almost 30 minutes after I got there. I've asked them to do an investigation about this and I've contacted them to find out about the proceedings of the he investigation but there is no one getting back to me as they promise to do so. It's been 3 weeks now I'm still waiting. I want them to pay for my TV as I believe they are in fault, they took more than the time they are suppose to respond. They are only good at deducting our money yet the service they give is very poor. I won't ever recommend anyone to such a company.