Misleading and dishonest People

I app**** for a Hauwei Y9 Prime 2019 on "MTN made for me XS contract for R259× 24months".After I received the device they sent my the agreement that didn't match what they told me on the phone call.The new agreement that I didn't agreed to was now a "36 months my MTN choice flexi 220 for R278.44".Today I checked my monthly bill and got another surprise my ****ing bill is R475.85.Im so ****ing angry right now.I need you to cancel this contract because it's still not 14 days which is on website. You website states that you can cancel a contract within 14 days... So guess what I'm canceling it if you don't change this ***** activities of yours.I have proof of the contract I app**** for and the proof of the ridiculous bill for 13 days and also the agreement which was sent to me a week after the device got delivered.I will not pay cancelation fees because the 14 days is not over!!!!!!! I want my 24 months contract and my bill fixed!!!!!!!!!!