Unprofessional service

We purchased an 3 piece corner lounge suite from Lewis Store Lydenburg during November 2018 we paid cash and have an one year warranty on the suite. Friday night the 12th of January the corner seat broke. On Monday the 15th of January I phoned Lewis Store and spoke to the manager so she asked for my number and said she will phone me back so she send the driver to my house to come and look if the corner seat is broken so the came and confirmed that it is broken he then went back to the store. So the Tuesday I phoned again and asked what is the situation on the corner seat when will they collect the broken one and replace it with a new one so once again she will phone me back. On Wednesday the driver came to my house and informed me that the lady that workers in the storeroom will only be back on Monday and only then can they deliver the new corner seat. So Monday came and gone... Wednesday I phoned and not once but numerous times just for the call to be dropped in my ear while holding for the manager cause I give them my surname so she knows its me phoning. So after a struggle to get hold of the manager I left it. On Friday the 26th of January finally the manager phoned me at about 14:00 and informed me that the driver is on his way to collect the corner seat. So I sat and waited for him until my husband came home at 16:15 so he phoned them also numerous times but got through to the manager who told him that they did not phone us and told us that they will collect it today but they will on Monday. Monday came and gone once again. So on Tuesday I went online and lodged a complaint on Lewis Stores website and they will report back within 24 hours. Till now no feedback from them. So Thursday the 1st of Februay I phoned again. I told the manager that I want my new corner seat today or my money back and that I will load the corner seat into my car and take it to the store myself so she said the driver is in Belfast and will only be back Friday. Friday I phoned AGAIN so the manager answered and when she heard its me she just put me throw to someone els. So I think I was the lady that workes in the storeroom. She said she must speak to her supervisor and will phone me back in an hour that was at 12:00 at 15:15 she did not phone back so I started to phone them. After numerous attempts 38 and 37 times to be exact I got hold of her. So she said that the supervisor was in a meeting till now but they will deliver new corner seat when the rain stopped I told her they can deliver it Saturday morning. Guess what after 3 weeks I received the "new" corner seat. The corner seat the gave me was not wrapped in plastic and got marks on it so you can see its not new it has to be the floor demo.