Review Nike airforce 1 men’s shoes quality problem

After saving his pocket money for a long time - my son a pair of Nike airforce 1 shoes on Saturday last week. On Tuesday the stitching on the side of the shoe has come loose. We paid R1999 999 for these shoes and I am very saddened by the fact that they are already falling apart. I’d like to know whether this is common and whether they can be replaced. We have always bought Nike as the quality has always been phenomenal. Please contact me urgently