Disgraced with Lewis stored customer service

We bought a LG home theatre component system from Best Electric Cleary Park Port Elizabeth for R10000 After a year and some months the speakers made a funny noise. I contacted the store in October 2018 and spoke to the store manager Doreen. She said they will contact me to let me know when they will collect the item. A month went passed without hearing from her. November 2018 i contact her again and she said their bakkie was faulty but once its been repaired she will contact me. The year went passed without hearing from her. February 2019 I contacted them again beacuse the extended warranty was due to expire, to my supprise she ask me to bring the item to the store. I immediately refuse beause we paid delivery fees when the item was bought I decide to contact the customer care and the item was collected 12 Feb' 19. On the 25 Feb' 19 customer care contact me to explain the tweeters was faulty and the techician are finding it hard to get spares but the item is still with them. A week after that I phone the store for an update and she explained the extended warranty doesnt cover the speakers. I explained to her the sales person convinced us to take the extended warranty beacuse it covers the complete system including the speakers. She said her staff will never give such false info. This is when my nightmare started as a customer. I contact custormer care once again and they refer me to Nonni because she was handling our complaint. She also explained the same story about the warranty that doesnt cover the speakers. I explained to her also what the sales person said. She said she will escalate my complaint to her supervisor and let me know. 8 working days went past hearing nothing from them. I contact the store again and Doreen said she will contact the technician and phone me back in 2 days. She contact me and explain the techician said the music system was abused. I felt disgusted with their findings and felt my rights as customer was violated. The product was defective bottom line. I immedaitely contacted the customer care with hope they will se my point of view but I was disgrace with Nonni opinion. She explained It will cost them r2000 to fix the speakers and i will have to pay but I explained to her what the sales person said about the extended warranty. I felt customer care and the store bombard on me. Nonni said I must escalate my complaint to the area manager Mr Prinsloo. My energy was already drain I said to must return my faulty item as ease. LEWIS STORES staff are ***** and ******** they will decieve custormers to make sales. I am still paying for a faulty item which i pay R10000. I will never do or encourage anyone to di business with them.