MTN promotions all talk and no action

I have never had more poor service ever. I upgraded my contact online, was contacted by a company called Mondo to do the upgrade. Was told congratulations you also get buds as well as an A8 tablet. Well......still waiting for my tablet. I redeemed it on the Samsung members app received an email with a reference number and congratulations blah blah blah to be delivered in 7 -14 working days. Still got nothing 2 months later. Phone mtn, phone Monday, phone Samsung and NOTHING. Nobody takes responsibility for anything. And it's amazing how a cellphone company has got NO CLUE how to pick up a phone and use it to return a person's call. I have wasted so much airtime trying to track my missing promotional tablet and I get pushed from pillar to post. How can they promote something and not deliver? Is there no supervisors or managers that can assist someone when the person who answers the phone has no answers, all u get told is "I've escalated the problem". How many times must a problem get escalated before something gets done about it? Don't run promotions if u have no intention of delivering.