Hugh Mathie not taking responsibility

Over a 2 months ago we bought and expensive king size mattress and bases from Hugh Mathie Beds in Durban North. When we started sleeping on the bed and I noticed that it felt as if I was going to roll off the side of the bed due to it being softer (lower) than towards the middle of the bed. The base set also squeaked on my side. I thought perhaps it was just that I needed to get used to the new bed. After 2 weeks I let Hugh know about the defect. Hugh sent the mattress people by and they said there was nothing wrong with the mattress. The strange thing is that the loan mattress also did the same but also on my hubbies side too. Hugh has also organised to send the base people to come by. We feel that someone from Hugh Mattie Beds need to come and have a look at the base and the mattress and advise where the problem The worst is that Hugh keeps insinuating that we are making this up. Really!! I don't have the time to make up problems that take time to resolve. Mr Mathie, if you are the bedding expert as you claim, how come when I asked you to come and see the bed yourself you don't want to come. I wish we never bought from you!