Bad service

Home choice contacted me and offered me credit and I decided to take the restonic mattress which they delivered on time but after 3 months I had problems with the mattress like I hardly used it and it was making funny noise and u could feel the springs then I called and told them they promised me that someone will come to do assessment but they never pitched at all yet I have to pay the account but I don't get attended to.... Now I stopped paying because I wanted their attention they called I explained still promised to come and they never pitched. Now they handing my account over for what good reason.