Levi's India — low quality of jeans

I bought jeans recently from levi's store pla hisar on 26th jan 2018, against bill no.2182 item code[protected]. It's colour and quality of jeans has become worse within one usage. Store management is not responding properly to the complaint. It is very disappointing to see such expensive jeans with poor quality. I request you to replace the piece as soon as possible or i will file this case in consumer court... Thanks