Quality of NIKE shoe and Management bad attitude

I bought a Nike shoe for my baby for school on the 07/07/2015 and within a week the shoe was falling apart. I took the shoe to one of the Edgars shop I was adviced by the customer care staff to take it to the retail shop that I initially bought the shoe within 30 days. On the 25/07/2015 I get the chance to take the shoe to the Edgars that I bought the shoe.<br> The manager refuses to exchange the shoe saying, \ the shoe was left in the sun and the glue pulled away from the shoe causing the shoe to open in front"<br> I tried to explain that the shoe was damaged due to BAD QUALITY<br> The manager gave me 2 scenario that he assumes might be the cause of the damage either becoz of the sun which they will have to take the shoe to the headoffice to investigate which I have to wait for 30 days for feedback<br> OR<br> If its due to bad quality they will take the shoe in and exchange the shoe immediately <br> My question was"