Was sold sold damaged goods

Went to fashion world in Rand burg and bought a pair of jeans. The most expensive pair of jeans at fashion world. Only when I wore it 3 weeks later and it just teared up on me... yes it was the rite size . Took it out and realised the material looked like it was poured over by acid or some chemical. I can literally pluck out the jeans bits by bits like chicken feathers . Went to the store and the manager refused to hear my frustration even though he saw the jeans. Telling me he already sold 60 of the those jeans no one came back. I am feeling sooooo ******.