Worst customer services on par with Telkom

I renewed my contract and was promised an additional 1GB data for the first year of my two month contract. Three months later Vodacom removed the free data promised to me for a full year. I have spoken to so many useless agents and even their managers and no one can assist me. I keep getting passed from one contact centre to another. This evening I called twice and was told that they cannot assist as their systems are down, the same excuse that I got a week ago.