UNHAPPY MEMBER

I purchased a cellphone two ago, I have gone to the store to cancel the contract of which i was told by the lady, HER NAME IS SHUDAL that I can cancel if i am not happy. I am now told by the store manager Vee i cannot cancel because of Vodacom rules. IS THIS PHOENIX STORE RULES OR VODACOM RULES. I am a consumer and according to NCA laws i am protected. I AM TOTALLY NOT HAPPY WITH THIS PHONE, THE SAME PHONE AT OTHER CELL STORES IS HALF THE PRICE AND VODACOM IS CHARGING ME DOUBLE THE PRICE. THIS IS A TOTAL *******. PLEASE ALL I WANT IS TO CANCEL THIS CONTRACT. AT THE TIME OF SIGNING THEY PROMISE YOU A WHOLE LOT OF STUFF AND NOW THAT I WANT TO CANCEL I CANT.