Sissy boy bad quality light blue denims

I bought a light blue denim jacket at R1599 and after wearing it 4 times within 6 months it stretched in certain places on the jacket, like it's worn out in certain places. I noticed only a few months later. My light blue jeans also wore out like that after a hear which I paid R1200 for. When I queried at the shop the ladies said it's over 6 months already and can't help. All my other sissy boy denims are in perfect shape except for the light blue denims. It looks terrible to wear. I will never buy at sissy boy again.