Got ****med into buying a S9 with the promise of a free dex pad and 128gig memory card

I May I purchased a Samsung S9 at Vodacom in Cavindish square. I did this specifically because I was told if I do so I can get a free Dex Pad and 128gig memoray card via Samsung rewards by the consultant I was dealing with. I was even shown the poster of the promotion in the store.

In other words, Vodacom enticed me into the contract with this promotion.

I redeemed the voucher in Samsung rewards and did the necessary. It's now 4 weeks later and I have not received anything. My last three emails to Samsung have gone unanswered and vodacom is simply throwing their arms up in the air and refuse to assist me. How can you refuse to help me when you advertised it as the Vodacom Buy and Get promotion and enticed me into purchasing the phone?

Now I have found out samsung rewards is shutting down soon and this has been advertised in their application since BEFORE I even purchased the phone.

Vodacom explicitly advertised the promotion as running from April to June 6th: http://www.vodacom.co.za/vodacom/terms/promotions/samsung-galaxy-s9-s9-plus-vodacom-buy-and-get

Vodacom wants the benefit of enticing me into a contract with the promise of free merchandise and them throw their arms in the air and refuse to assist me in any manner in redeeming the goods promised. This is absolutely pathetic,

The worst part is my partner ALSO got the s9 at my recommendation because of the offer of the free Dex Pad and memory card.