Promotion when purchasing Vodacom Smart 3G tab

When purchasing the Vodacom smart 3G tab in July 2015 the promotion was that on purchase you would receive 200mb per month free for 12 months. Each month thus far I received an SMS informing about how many times I received my 200mb free. This is normally done by the 4th of each month. November I received no SMS and called the customer service where I was told that a request word be logged and someone would contact me within 24hrs, also that I word receive a reference no. 24 hrs passed and no contact or SMS from Vodacom so I call in again to enquire bearing in mind you limited to the amount of calls you make per month to the customer service and I am making another call about the same reported unresolved problem. Today 7th November at 12:30am I call in (3rd call about same unresolved problem.Agent informs me the 200mb free per month only if you load your acc.with no less than R29pm