Lee Cooper — colour fade in just one wash

Address: 180001

I bought black jeans frm big bazar in october but its colour fade in just one wash im very disapointed frm its quality and it also attracting dust dnt know what to do as i hv lost lost bill..

It's a request to the lee cooper brand that if it is possible so kindly do the help for this matter and change or clear my issue for this product...
My contact no [protected]