DAMAGED GOODS NOT REPLACED AFTER 22 WEEKS

We bought a bed on 24 Aug 2014. It turned out to be faulty. We lodged a complaint on 9 Dec 2014. The rep from the supplier came out on the 17 Feb 2015, 10 WEEKS after the complaint was lodged. On 2 March 2015, 2 WEEKS after the visit, H&H contacted me to say they will replace the bed. It's 10 WEEKS since that call. It has already been 22 WEEKS and we still don't have the bed. We visit the branch every week, just to hear the suppliers haven't delivered, from the lady from the complaints and the manager. I have a really bad back and sleeping on this bed isn't funny anymore. I DON\T KNOW WHAT TO DO ANYMORE! PLEASE HELP"