Still waiting for free wireless charger

I upgraded my contract on 17 March 2016 to the Samsung S7 Edge and a free wireless charger was part of the deal. I was told at the time that there were none in stock but more was expected in 2 to 3 days. I've been promised by the consultant and the store manager that they would call me to keep me informed but to date, I have not received a single call from them. I have to call on average 2 to 3 times a week to find out what's happening. I have been given promises only for them to not materialize. As an Autopage customer who has just been moved over to Vodacom directly, my first interaction has been pathetic.