FNB Connect issues

On Black Friday, FNB was running a special on their apple watches, I app**** for it the night before, and was contacted first thing in the morning. After going through the application process, the lady approved my order and told me that it would be delivered within 3 working days. Then 5 minutes later I get a call back saying that they are out of stock and can't give me that deal, but they still have stock on that exact watch, just for a higher amount. I could understand that excuse if the deal said limited to the first x amount of orders, but there was nothing like that. But they still had stock of the watch, just at a higher price. I then logged a complaint on the 30th of November, and never got a call back, then on the 3rd of December logged another complaint, and the same thing. So I phoned them a week later and the person told me that the complaint had been escalated and someone would phone me very soon. Then the next day I received a phone call saying that they have been instructed to sort this issue out before the end of the day, and that it doesn't sound correct what happened to me. That was a week ago, and still no phone call, and since then I have logged a third complaint with no one contacting me, as well as calling and never getting to someone that can help me, while blowing through airtime. Not happy at all, ive always promoted FNB as being a great bank, and never having any issues with them.