Horrible service from sleepmasters

I bought a new bed from sleepmasters about 10 months ago the sales person advises me to rather buy this bed then the one I was looking at because it is better quality now the so claimed better quality beds springs in the matres colapsed and there is *****s sticking out from the inside out ,now the product is still under guarantee,I went in to inform the company of this problem they said no problem thats a factory fault they will exchange it and I will be contacted within rhe following 3 weeks that was almost 2 months ago and still I haven't heard anything from them ,everytime I go to the shop to find out whats going on they always have excuses and my problem doesn't get resolved.Im still paying for the bed witch I cant use anymore becuse the matres is so uncomfortable my body gets sore after a few minutes of laying on the bed wich I also told them but nothing is getting done to exchange the bed but still I have to pay but im not getting the service Im paying for