Vodacom misled me once again!!

There we go again!! Last month I took up a contract with vodacom & was told that I am gonna get 25gb anytime data for R169, month end came & only 15gb anytime data was allocated the 10gb was video data. I logged a complaint early this month & was contacted and advised that the 10gb video works exactly the same as anytime data, I can use it for facebook, whatsapp, instagram & google and my ticket was closed coz I was under the impression that I can use the video ticket any how. Yesterday my anytime data was depleted and tried to use the video ticket, to my surprise! It does not work! So this means that I was misinformed AGAIN!! Can vodacom please cancel my contract with immediate effect & please note that I will not pay for any cancellation fees!! If not, im taking this to the ombudsman