AVOID AT ALL COST!! Unfortunately I am unable to give it 0 stars. I have been using ADT for home the last couple of years and recently a business account. We had some electrical issues, which was resolved by our electrician. An ADT engineer visited site and left within a couple of minutes after being told issue has been dealt with and no work needs to be carried out. A few weeks later, we received an invoice for over £500 for 'the work' the engineer had carried out. The job sheet shows the engineer had clocked 39 minutes of work carried out, even though he never made it to where the panel is located or stepped foot no further than the front of the shop. This happened in October 2024 and I am still trying to resolve it 3 months later. Their accounts team stated someone tried to call several times last month, but not once did we receive any calls from ADT, I have called a couple of times and each time have received a 'Someone is on the case and will contact you' response. I thought I would go with a 'reputable' company and trust them with my properties and yet I feel uneasy that they can so easily scam and charge us for work that they did not carry out. Considering they are a security company, I am speechless.