Ok furniture

I bought a Sony home theather system on May 2020 at Ok furniture store and then after six months time the DVD player burned will playing it I took it back to OK furniture to be repaired after three months I had the same problem again on the DVD player,and now I having the same problem on my sub-woofer burned will playing so I decided to take back the whole Sony sound system to Ok furniture store to tell them that this Sony sound system gives me problem why it keep on burning while playing it,I went to Ok furniture to get an exchange the sound with a sound bar of the same price but at Ok furniture they refuse to take the sound back and I still have warranty on my sound Sony sound system so I don't need them to repair it anymore I need them to give something else.So I need you to help me to as you help me before to solve this issue I'm disappointed with this Sony home theather system can you please help me with this issue so that I can get something instead of this Sony home theather I still have warranty on the Sony it was two years warranty.***