Nike Air Force sneaker

I bought Nike Air Force sneaker (white in color) around August this year(2019) at Sportscene Randburg so last week I noticed that the sneaker has some glue pealing off on the other hand is cracking on the side. How is it possible for something I paid arm and the leg for, in the space of three month is already falling apart? Is the shop selling ****s or is just me here? If this is original Nike then I am shocked as hell. I paid R1700 inclusive of the spray.