Incorrect delivery

Experiencing the WORST service from Rochester. Took delivery of my couch on 30 September, the couch was just delivered and not unpacked or installed. Once I unpacked it I realised that the third piece of the day bed couch was incorrect. I am trying to get hold of someone to help get this couch removed and a new couch delivered (the couch I actually ordered and paid a lot of money for!!!!!) Everyone says it is not possible and basically that I need to wait until they can find someone who knows the process which could take all week! BEYOND FUSTRATED!! I have additional orders which I was going to place with Rochester but never again will I deal with such pathetic service!