I feel ****med by Mtn Menlyn!!!

Good day.

On the 4th of March 2023 I went to MTN store in Menlyn Park for a contract phone. A Samsung consultant approached me and informed me that they have a promotion on the new Samsung s23 and that I will get a free SamsungGalaxy Tab S6 Lite and a UPS if I choose the s23. I decided to go with that because it sounded like a good deal. All paperwork was done and the consultant claimed the Tablet on my behalf. A few days later I received and email from Samsung stating that I should send my ID/Driver's license copy,which I did. A few days later another email came through with the same message that's when I decided to go back to Mtn for enquiries. I went there on the 18th of March and one of the consultants told me that it is not their responsibility to assist me with my claim and I must go to Samsung. After arguing for some time, he agreed to assist me and requested my invoice. After pulling a copy from their system, they realized that they used a wrong invoice for my claim. He then tried claiming again using my imei number and told me that it doesn't go through as it says it has already being claimed. He told me that the only thing he can do for me is to send them an email which he did. I kept checking if there's any response from Samsung but there was none. On Wednesday, 22 March, I decided to call the Samsung guys and told them my problem. The consultant I spoke with told me that the promotion ended on the 20th and there's nothing they can do to assist me! Since then, I have been sent from pillar to post and this is really emotionally taxing for me. Can you kindly assist me on what I must I do to get what is due to me or if all fails maybe I should cancel the contract and return your device because one of the reasons I agreed on it was mostly because of the free Tablet and the UPS.