Dreams review: Bad mattress and worst insurance claim service

Purchased an expensive double firm mattress for back pain, as suggested by dreams, swindon in the store. 3 years later, my back pain got worse. Woke up every morning with a stiff back and have bad back for all morning.
Claimed insurance service lately and they have feather light scale to measure the deepest point in the bed which should exceed 5 inch to get the mattress approved for replacement.
It is worst and most stupid way to measure the bed's form.
Sleeping on the bed with your 70+ kg is way lot different than putting a feather light scale over it to measure how soft and out of form the part of bed has become.
The mattress had appealing and 8 years which didn't make me have a second thought, but now that I know how the insurance claim survey works for the replacement, it seems more like just a scam or wrong way to advertise the product.
Not a hint of information about insurance procedures was provided when purchasing the mattress.
Now I have no idea what I do with it, I cannot get exchanged or a penny for it.
I highly recommend to think twice before purchasing products in this store and now have heard and seen better companies with better service.