I need assistance with my 2 pairs of slipons

The shoes and slipon are comfortable. However I not happy last year I think it was November if not mistaken. We bought 4 pairs of slider and 2 sneakers. I think it was the black Friday special 2 of the sliders they got opened underneath then I returned it to the shop they told me it's older than 3 month so they can help me with exchanging the good. Let me find a glue and glue the I asked the what typ of glue the didn't know the manager asked me to leave the 2pairs with them they will contact me that was 2 weeks ago I am still waiting coz I told them no shoe make us able to fix then I didn't pay those slider to wear only for 5month so that mean everything 5 month i must buy the slider that won't be possible for me. So I need the to sort mě out please I bought them at canal work cape town