Same as a lot of people on here, purchase a king size mattress from the Cheltenham store. After 3 months we noticed dips in the mattress, despite the fact it was flipped and turned every 2 weeks. We contacted the customer service and they sent their Technician out and, like previous reviewers, lots of blah blah then he tells us the dips are happening because the bedframe is too small for the mattress, by 6-7cm according to him. We were gobsmacked by this as we have had the bedframe 18 years and it has always had a kingsize mattress on it. We received a letter explaining all of this so we asked their customer service for a photograph of this mysterious 6/7cm overhang, no response apart from get your own technician. We then sent a letter to them with photographs that clearly show that the frame is 150cm wide and the slats are near the top of the frame, no response. We then sent an email and copied in the MD, Alan Williams, no response. I then sent another email to Mr Alan Williams Direct, no response. They have to be the worst company we have ever bought anything from, avoid them at all costs