Broken promises equals broken trust

Why do they run competitions where they don't deliver on what you've won 99% of the time? And, where you call customer care and they say they will get back to you but you never hear back from them? That's DStv and their rewards programme. Out of all the things we have "won", we have only received two - monthly treats vouchers....for which we are thankful. But what about the three times we have spun the wheel and won a free Box Office Movie? It's supposed to take 7 days to load onto your profile yet we won the first one on 29/10, the second on 30/10 and we can't remember the date of the other one, but it's been way more than seven days and not a single one has been loaded to our account! So, how do we know that when they say we have won entries into this or the other prize draw or experience that this is actually the case? After the first movie wasn't loaded, I called customer service and they said that we weren't the first to complain about not receiving their free movie, that they would speak to their superiors, log a query and get back to us. Not sure if that's actually been done because they have yet to get back to us! We are so tired of DStv not delivering on their promises!