Shocking service from MTN upgrades department

My MTN data and wifi router contract (20gb day & 20gb night) is up for renewal where I'm currently paying R349 for it. I received a call from the upgrades department on the 22nd or 23rd of July where a consultant offered me the 20gb day & 20gb night sim only deal for R199, which I duly accepted and where she confirmed that it has been captured on her system. I receive another call today from the same upgrades department informing me that the new contract was in fact not captured, obviously because the consultant I dealt with was *********** and that it was a promotion which has since ended. Meaning if I now want the same deal I was offered I'd have to pay R299!!! I find the service appalling for lack of a better word. Rest assured I will be terminating that contract by the end of today!!!