no special assigned to my number

i have ported from MTN to Telkom mobile as my friends enjoy lots of benefits with regards to data discounts. whenever I dial *123# it tells me that there are currently no special offers assigned to this number. I have contacted the call centre and they have escalated it but nobody gets back to me. I have spoke to several agents who then tells me that I do not qualify and I would like to know the reason why. I spend more than R300 per month on data.