Contract cancellation

I went instore on 24/09/15 to order the iphone 6+ because the store don't keep stock. I am an existing customer and wasn't told that i have to complete forms. A week later i was contacted that the phone was at the store. I went back and on arrival I was told that the phone wasnt there anymore and that i had to complete an application form. I asked how long the application would take and the lady said 24hrs. Two days later I went back to the store cause nobody made contact. I found out that the application form was never submitted. She contacted me the next day to inform me that my forms was accidently shredded. I had to complete forms again. I waited another week cause telkom had system problems. I eventually received phone on the 12th of October. It's now a week later and i am unable to use the phone cause I cannot access the internet. I phoned the customer care and someone only told me with my second call that the apn is not activated on the sim. This was last week friday. A sim swope was done last week Thursday. And a email was sent to the it dept. I was told that someone would contact me within 72hrs. I am still waiting. I want to cancel this contract.