I cannot count how many occasions I have contacted them, hours of my life for appalling service. No follow up or actions taken. Extremely unhelpful. I waited at home all day for an appointment but the engineer never showed up, I was not notified of a cancellation and waiting until 6pm when I should have been in the office at work. I also waited at home for a phone call booked weeks in advance because that was their only available time to call me and I would need to provide meter readings. They never called me. This was after them refusing to send anybody out to check our incorrect meters for 3 months of me asking. The readings were saying £800 for our energy bills in one month (when we were on holiday), they still refused to send an engineer and insisted it was correct. The woman was rude on the phone (one of the million times that I called). They then threatened me with debt collectors after one British Gas consultant advised me to cancel my direct debit. When they eventually came out to look at the smart meter they agreed it was faulty so changed it. Then the monitor they installed at the time did not work and wasnt showing readings for gas. They did not install a carbon monoxide alarm as was promised (I believe this is a legal requirement and I asked specifically for the man to do it). I have asked for an email to confirm my complaint but did not receive one (on three occasions). Absolutely the worst service I have ever experienced, cannot stress enough how terrible both their customer service and processes are.