Vodacom contract breach

Good day

I took a laptop contract out on the 27th of August and on the contract it states 24 months as was explained to me now I have been struggling from August 2018 to cancel this contract, on my contract at the top it says contract term date: 17/08/2018, Vodacom keeps on telling me this is a 36 month contract, which is clearly untrue as their contract has the correct details on it

I want someone to phone me back and correct this because I am really getting fed up with Vodacom

Regards

Bianca ********** 519