Angry customer

I bought sofa for 30000 , three years down the line is peeling from the bottom they used leather and cheap leather touch now my sofa lookes horrible the seating part is still fine and new but the bottom it looks 20year old , they refused to fixed it and told me to pay 8000 to fix it, the told me that it had 3years guarantee but whem i bought they told me that is 10 years and the manager Edwin was very rude and unreasonable, I feel like I've been ****** , who can pay 30000 for a sofa that last 3 years it very unfair.