Data issue and lack of follow up

I did an upgrade on my Vodacom contract in September 2017 at the Baywest Mall Branch (Vodacom 3G Data Store) in Port Elizabeth. The consultant in question told me that I would receive 10 GB data with my new upgrade which I never received, it was a promotional offer. I went to the store to find out from the manager or the consultant why I haven't received the 10 GB data yet, When I asked to speak to the consultant who helped me, the store manager Bruce Chetty told me that the consultant does not work there anymore and that he cannot help me. I have never been treated so bad in my life by an employee of a company. After I left I have phoned the store a few days later and spoke to Cody, Daniel and again Bruce after phoning a few times after. Each time with empty promises. I even laid a complaint with Vodacom's head office and still awaiting an answer...Today I went to find out if any progress has been made, but alas no such luck. ONE VERY UPSET AND UNSATISFIED CLIENT. I WILL NOT RECOMMEND YOU TO A FRIEND OR LOVED ONE!!!!