I will never recommend Su Casa designs to anyone

I bought orange lounge suit for R20000 last year in June, it's only been a year and the stiches are tearing apart. When I emailed tbem tbe puctures they are telling me they will not repair coz it's my fault. How can tearing of stiches be my gault and ir's only on tbe 2 sitter the other couches are okay. I will never refer any one to Su casa we pay so much money for what?