Swop out of Factory fault couches with new ones

I bought couches at CWA Centurion and they were delivered broken. I noticed after the driver left my house.. As soon as I noticed, I called their office and they referred me to their customer service. They've been promising me to swop out the couches for over 4months now. When I call their Customer Care number, they do not pick up. When I visit their offices, they say I must talk to customer care. The shop robs customers off theri money. All they have to do is sowp out the couches with a new set.