Bad product, bad service

I visited MTN Cape Town on Cyber Monday and purchased a Samsung S10. As part of the Black Friday promo you receive a smart TV when making this purchase. My application was in processing and I sat there for the entire day waiting as I really wanted this deal. The manager assured me that promo still runs for the entire week. The processing updated on the 3rd and I went to the store to collect my phone. The ad was still flighting on the wallboards in the store and the manager assured me that I can still claim my TV. I filled out the application and was told that I will be contacted in 48hrs to verify delivery address and tv license details. No call came; so I contacted Samsung to enquire. Katlego who was very helpful; escalated my order. He called me the next day to tell me that my order was declined for the TV as the promo ended on the 2nd. Which was the day Inwas at the store and filled out my papers. It is not my fault that your processing department dragged their feet. Or was this just a publicuty ploy to get sales? Not only did I receive a phone with a dead pixel; but did not receive my TV either. We bought a Note10+ and the S10. Both phones have a dead pixel and we only received the gift for the Note10+, but not the gift with the S10. This leaves a bad taste and I think I should return the phones and cancel the contract.