Provogue India — Poor Quality Product or duplicate Product

I purchased the PROVOGUE bag 35 L on 17 Oct. Only one month I have used and it got teared off, All corner threads out. As per bag capacity I carried only 10-12 Kg. I have another PROVOGUE bag 40 L which I was using form last 6 month there is no issue. May be the Quality decrease with in 6 month or its duplicate products.
Kindly take immediate action.