Voda4U Data Theft

Data contract taken in April 2017 with Vodacom through Voda4U for 30GB day/30GN night data through special with tablet and modem. Inexplicably ran out of data in Sep 2017. Found out that Vodacom had not loaded night data since contract inception. Sent from pillar to post by Vodacom. Dealer attempted to assist. Informed 2day by dealer (after I called) that I have been given the data but only credited with 1 month of data I have lost, not the 8 months. Vodacom help line confirmed no extra data and no night data loaded.Have been buying additional data to top up data for requirements that would have been met by package taken. *****? Definitely breach of contract.