false advertising

A month ago I phoned Vodacom canal walk to enquire about the S7 with the free gift of the wireless charger. the salesman said they had available so I went into the store and did all the paperwork. when leaving they informed me the charger was on back order and they would call me in a week's time. I got no call and phoned the salesperson, Morne who said it was still on order. 3 weeks later I phoned the manager Heinrich who said he would get back to me the same day. no call was forthcoming. I then phoned him last week and he said there was no more however he would give me speakers. he still has not called me. after my purchase Vodacom still advertised the deal for two weeks after. This is atrocious service and false advertising. I have also sent an email that has not been responded to.