STILL NO ASSISTANCE TILL DATE

I phoned MTN call center on the 20th of July to report an issue with my data, they assured me someone from the technical department would contact me within 24 hours to assist. Till date no phone call or assistance, I proceeded to send with e-mail 2 days later but to my dismay I did not get a reply. For the last 4 months when I receive my recurring data, I receive promo data. the problem is the recurring data gets depleted at a rapid rate, once that has been depleted conveniently the promo data also expires after 5 days without me even using it. In short the recurring data gets depleted before the promo data. This is very frustrating as I did not ask for any promo data but my monthly data which I'm paying for is getting used up first. So by end of week one i'm left with no data and have to constantly purchase more data which is costing way more then the service that i'm actually receiving. Can someone please check why this is happening and reimburse me for the data that I am actually paying for. This is highly *********.