Vodashop not sticking to their contracts signed

I SIGNED a contract on 28 June 2015 at the vodashop Colonnade centre in Pretoria. The SIGNED <br> CONTRACT clearly states that for R498 I will receive the following - 120 free minutes, 300 free sms's and 1.1 gig data with my S4 phone. Today on 30 June Vodacom send me a message informing me that i will only receive the following on my contract: 75 minutes, 200sms's and 1Gig data. <br> I phoned vodacom - they were unhelpful and said i need to go back to the shop so that they can rectify it - i am 220km from the shop!!! They said they cannot help me as they don't even have a e-mail address!!<br> i then phoned the shop - Simphiwe said he made a mistake on the contract and i can't hold him accountable - i have to accept that i will not get what i signed for!!<br> <br> What is the use of a SIGNED CONTRACT if they can just change it as they like and i have to accept that i pay for something i am not getting????