Puma — pair of puma shoes torn within 6 months

Address:

Mumbai City, Maharashtra, 400067

I had bought a pair of black puma shoes almost 6 months back. The shoes are comfortable however the net design on the upper part is coming out. I am a regular puma user however this is my first experience similar to this. While i went to the stores from where i bought it, the guy says we can't help if it is more than 3 months. Are we expected to get a good quality only for 3 months?
The store was in growell's mall, kandivali east, mumbai.