Poor quality

I bought a pair of Turner T Gladiator Running Shoes (T4002W-NDP) on 4 May 2020 at Tekkie Town in Hartbee****rt Village Mall. I used the shoes only for walking. This week I noticed that the seam at the top of the one shoe is coming loose. Since the shoes are not even 4 months old and are in excellent condition, I returned the shoes with the expectation that it will be replaced or at least repaired. I was however informed by Tekkie Town that they cannot replace or repair the shoes since it carries no guarantee. I was not made aware of this fact when I purchased the shoes. Turner running shoes clearly of very poor quality if it does not even last for 4 months!