Woodland — My sandals get tired

I have buy a woodland product from Flipkart.My sandal was tore within the 3months. I visit the showroom( EA Chennai) to stitch the tore but they are refused to fix the same.
I was ready to pay to fix the problem but they are simply telling we won't do these kind of services. If you will not do the service why I have to buy a branded products. I am not sure the quality of the product also. Attached the image for your reference and invoice. Kindly do the needful to fix my problem.