Unhappy customer

On the 26th i bought a Samsung J4 core at Edgars active, Tsakane mall assisted by Karabo. When I get home i saw that the phone is supposed to come with 1.5 g per month x 12, as it was shown on the brochure and also on the phone im the rack.

I contacted Vodacom call centre at 111 and they told me that the promotion ended in October last year, and the reason i bought the phone was because of that promo. I need the promotion as advertised or else i will return the phone. It seems you're just attracting customers with a false promo