Defect couches

I have been struggling for. A year to get the couches I ordered. I've been going back and forth with them. The couches I received were 2nd hand and brought brand new fully paid for. I just recently had a contact with them.at first they delivered showroom. Couches with a lot of defects. They promised to exchange for new ones. The couches a re 2 colours and I've emailedbuy they have decided to ignored me. I have received 2 couches a 2 seater and 3 seater both have evident difference in colour and scratches. I so frustrated because they still. Can't get the right, someone. Please help. I paid for.staim protector. Which I didn't get, somebody please help, unhappy. Client from such a high end store and so expensive