Complaint

I bought shoes at shoe city a few months ago, slip in tomys not too long shoes started coming loose on top. Took it back at the Cape Gate Branch, I never had my receipt they could only exchange for a different item to the same value I took a different shoe with laces and it started doing the exact same thing which I only wore for 3 months. I don't have my receipt because they never gave me one. I would like to know how can I forth with this ? As I am unable to wear the shoe. I glued it just to keep from going more loose. I would like a refund pleas!!As I am really distasified in the quality. I sent the exact complaint to shoecity via email and I have to wait 48hrs for a response. Ridiculous!!

Regards, Charlene Africa