Wireless Charger "out of stock"

After upgrading my contract on the 14 March 2016 to a Samsung Galaxy S7 edge & being offered a FREE Wireless Charger. I have yet to have this Wireless Charger in my possession. I have called numerous times to Cellucity Canal Walk only for them to say they waiting on Vodacom for stock. I have reported this on Hellopeter and got a “copy & paste” reply from Vodacom to say a consultant will contact me. That has yet to happen. Subsequently, I had a call on 25 April 2016 from Pierre (Cellucity Canal Walk manager) saying that they are still waiting on Vodacom. What I fail to understand is that it is almost 2 months since my inception of my new phone & contract and still no wireless charger is in my possession. Why advertise for a FREE accessory and then you have none in stock!!! Surely you make provision for something like this!!!