Not as advertised

I went to this store on 5 April to get the 2 Vodacom 7\ tablets for R99 per month, on a 500mb top up contract, as advertised online and in brochure, special ending 6 April 2016. I received a sms with the confirmation on 6 April, but only 250mb data. This is not the deal I app**** for, and according to Nofulo, there isn't a 500mb deal available with 2 tablets (it was confirmed telephonically on 5 April, in the brochure and online - so why would I query this if this is the way it was advertised. I want the contract be corrected as advertised with 500mb data. Vodacom confirmed the store has to do this, but Nofulo wanted me to go back to the store with the adverti*****t - I can send you the screenshot of the adverti*****t. "