New Balance 530 Ripped Off In 4 Months

Four months ago, I purchased the New Balance 530 model from the JD Sports store in Manchester. However, the mesh on both the right and left sides of the shoes has torn. The right shoe's mesh has opened up so much that my sock is visible underneath. And the mesh continues to unravel. It's strange that such a reputable brand would produce a shoe like this, or that the sales representatives didn't provide any information about potential issues with the mesh. I haven't washed the shoes or done anything unusual - I've just worn them. It's unbelievable that the mesh would deteriorate this much from normal wear in 4 months