INFERIOR SNEAKERS SOLD

I BOUGHT A PAIR OF NIKE SNEAKERS IN JULY/AUGUST AT THE TOKAI BRANCH, WITHIN A MONTH THE MATERIAL ON THE SIDES STARTED OPENING. I RETURNED THE SNEAKERS AND GOT A VOUCHER. I BOUGHT A PAIR OF ADIDAS ON THE 23/11/2018 AND THE MATERIAL ON THE SIDES STARTED OPENING AGAIN, SAME SIDES AS THE PREVIOUS SNEAKERS. i WENT BACK TO TEKKIE TOWN TOKAI AGAIN AND WAS TOLD THAT THE SNEAKERS IS PAST THE GUARANTEE DATE, THEY ONLY ONLY GUARANTEE 3 MONTHS. NOT ONE OF THE PAIRS I BOUGHT EVEN LASTED 3 MONTHS. MY SON DID NOT GET ANY WEAR OUT OF THESE SNEAKERS. I AM NOT ACCEPTING THIS AS IT SEEMS THAT TEKKIE TOWN SELLS INFERIOR OR REJECT SNEAKERS!!