Engineer attended and payment was taken. Within 4 hours the Combi Boiler had lost all pressure again so no heating or hot water. Return appointment booked for 2 days later but Engineer failed to show. Chased all day with call-centre who promised Engineer was on route, promised to call me back but never did, right up to 17:30pm when they finally confirmed Engineer would be there in 3 days time. Wasted money (£130), wasted 1.5 days holiday from work, and 1 week later still without heating or hot water (family home with small children). Refund requested & will look elsewhere.