Faulty goods unreturnable

I am so disappointed at Fair price, I bought furniture on Saturday(29 may 2021) and the sales lady told me that the goods will be delivered between Monday or Tuesday and I advised her I will not be home to sign off the delivery and she said it's fine anyone I trust can sign off for the goods. She also advised me that I must not sign them off if there are faults with the goods. Then came Monday and my Mom received the goods for ne since I was at work, she then told me that the goods had faults and she told the delivery guy that she will not sign them off because the store said not to sign off for the goods that are faulty. Then the delivery guy told my mother that she has to sign off the delivery papers and then take up the fault with the store and not the warehouse because they are instructed to just deliver and they can't be involved in faults, that has to be dealt with the store, they also have other places to deliver to, so they do not have the time to wait for her to unpack all the goods and check them one by one. Then my mother signed them off and when I got home I saw the faults, they gave me an incorrect colour(meroon) instead of(red) and there are two dents on the couch, the other goods are in perfect condition, it's only the couch that has faults. I then called the store and their faults were not going through then I wrote an email to ***, with no response or feedback and then the store called me they said they will investigate the matter and call me back, no call back the next day. I then sent another email to the same email address and still with no response or feedback, then I got a call from Portia at Fair price Tsakane Mall, who then said there nothing they can do, they will not take back the faulty wrong color couch because my mother signed for it and I said how is it that they(the store) and the guy(from warehouse ) are talking two diffrent things when they work for one company, it is not my mothers fault that she was forced to sign the papers and it's their fault that their warehouse does not check the goods before packaging them for delivery if they are in good condition or not. It is also not our fault that the sales lady gave me an incorrect color when I specifically chose a red couch and not a maroon one. I want the correct couch I initially bought without faults or can I get a refund so I can buy the correct couch with another furniture store!!!!