Bad service, damaged sleeper couch

So we bought a sleeper couch in November 2017 (during the black Friday specials) at Bylsbridge Shopping Centre dial-a-bed, eventually the couch gets to our place. The sleeper couch was already assembled, why this was - I have no idea!! As a result the couch couldn't get through the door. I call dial-a-bed and this guy wants to tell me and give me (the client ) instructions on how we need to un-assemble this couch, so it can go in!!

At this point I am so unhappy, as this guy is using my own airtime to explain things that they as a business should've sorted out in the first place. Why is a couch delivered already assembled?? Then eventually they get the couch in without it being un-assembled and obviously the couch has all sorts of scratches on it. I call dial-a-bed again and tell them the situation and tell them I can't accept this, at this point I am now being questioned in a way that accuses me of the scratches on the couch, cause I allowed the guys put in an un-assembled couch in.

Unbelievable service...So eventually it takes them almost two months to come and replace the damaged sleeper couch. But guess what, they do the same thing again. They bring in an already assembled sleeper couch and now we are back to the same problem!!!