Terrible Experience at Vodacom Store in Fourways mall

I went to the Vodacom store in Fourways mall for a simple upgrade on the 27th Nov. I was given an Iphone 6s Plus. It took almost 4 hours to complete the upgrade because of the data transfer. I returned home, only to discover the bluetooth and WIFI button was greyed out. I returned to the Vodacom store the very next day .I was told initially that I could get a new phone the same day by the sales consultant as there was a default on the phone. Spent another 4 hours waiting for my new phone , only to be told by the manager that a new phone could only be given to me in 3 - 5 working days. It was time wasted , poor customer service where sales consultants are unaware of the procedures that need to be followed. There was no concern for me as a customer and yet I have been a loyal paying Vodacom customer for years. It was the worst experience I have had