Unhappy Russels customer

Im extremely dissatisfied with the service I have received and is still receiving from Russels in port shepstone. I bought new couches on the 26th of april where there was a defect on the big 3 seater couch. They requested for another company to come and collect the couch to repair which was taking forever and they phoned me at 8 at night to pick up the couch. They did advise me it will take approximately one week then I will get it back. I phoned last week on thursday which russels did advise me it will take two weeks. When I phoned today they cant give me any details as to where my couch is and how long it will take. They said I should phone the people that phoned me. How can they not give me any details as to whom is repairing my couch. Im so frustrated and hope they are reading this. Im two weeks now without my 3 seater couch