Still waiting for my wireless charger

I went to upgrade my phone to Samsung S7. They promised me a a wireless charger, i even have the receipt saying that i am getting one. I have been waiting 2 weeks. I have phoned the Vodacom shop, and they informed me that they still do not have wireless chargers and they do not know when they will have. They do not have any answers. This is not acceptable. As a client of Vodacom for many years now, I am very unhappy with this. I also could not get my headgear after Julian a sales person at Vodacom Jacaranda assured me that I will receive it, only to find out after I have signed that I can not receive one. This is very unprofessional to promise clients all these things and you can not deliver. I am very unhappy with this, and feel i at least want my wireless charger that was promised to me.