Fila — fila shoe bottom sole glue given up

In october 2017 i've purchased fila shoes from navrang shoes, panvel at rs. 2300/-. After only one and half month o[censored]sing it it's bottom soul got partially removed. I contacted the shop and they pasted it and given back to me. Again after one and half month o[censored]sing it same has happened and the shopkeeper again pasted the soul. I want refund or replacement of the shoes. Kindly help and guide for the same