Does MTN want my business?!

I app**** for an online Black Friday deal on 25 Nov. and never got a call back. I phoned *** frequently* to follow up, but was told that they can't assist with online deals. I app**** for the same deal again on 30 Nov., but received no call back. I corresponded with MTN via Twitter (almost daily) from 1 Dec., and was constantly told I will be contacted by an MTN representative. I finally got a call from an MTN representative on 11 Dec. and was told the Black Friday code was no longer active and thus no longer available. I asked to speak to a manager and was told I will be called back. I'm still waiting.

*I waited for a representative for 1 hour, just to be told they can't help me and that there is no call centre for online deals...