False advertising

Vodacom was advertising on TV you can add on Apple watch, Apple speaker or Apple pods for R89 per month for 36 months. This was advertised Sunday. Monday I phoned about 15 different Vodacom Shops and even Vodacom head office and no one new about this. This is ridiculous. Head office is blaming the retail shops and the shops say I need to call head office. How can vodacom advertise and can't keep to there paid TV broadcast. This is utter poor service. I wanted this for my son and now to tell him that's is bull. I cannot promote vodacom to anyone if they lie to there own clients. I have sent 2 emails and still no response. I need answers for this.