Unfairness to existing customers

We've been loyal and paying customers for a long time and had several contracts with them over the years. Even now, we're due for an upgrade and we would like to sign up for the 24 month 30 gigabyte Anytime special they are currently running for R329 but we can't as its only reserved for so called "New Customers ". Where is the fairness in that? I work from home regularly and I need more data to last me longer but now I can't because of being a loyal old customer. This leaves a bitter taste in my mouth and tells me that Vodacom does not value me as an existing customer but only wants news customers to make more money and sacrificing their existing clients in the long run. I was told if I want the same I would have to pay almost double. Luke the Manager at the Vodacom Mall at Reds in Centurion wrote to the Commercial Sales team and they bluntly said only for new customers...where is the care Vodacom, I'm also important and strongly feel I deserve this offer.