Hydraulics Gateway the worst service

On the 14th of February I went in to the Gateway Hydraulics to pay for a sneaker which was ordered at another branch which was a gift for my fiancé. When I get home he opened it and noticed a blemish on the sole. We returned the sneaker the following day to get an exchange for the same sneaker. Bongani a salesman there took pictures and escalated and promised to call within 48 hours which didn’t happen. I went back in store 17/02 Bongani advised he was not at work we should leave the sneaker he will sort it out. He then called same day and advised that his manager declined the exchange and offered a 20% discount on the next purchase. We asked for the managers email address which we still have not received. Earlier this week I spoke to the person who assisted with the sale Thokozani who advised they are waiting for a replacement sneaker from Cape Town. The following morning Bongani called as says they can’t do anything we informed him on what Thokozani said about replacement coming from Cape Town. It is now 8 days later Hydraulics has both the money and the sneaker and no way forward for me.