Online orders not proccessed efficiently

I recently made a telephonic order on a contract iPhone on the 4th August 2017. The payment went through successfully on the 6th of August on order no DIY ********** 4. I was advised by Zinhle that I can expect 5 to 7 working days to receive my device. When I call in now on the 7th day, I am told it is actually 7 to 14 working days. My device has not even been dispatched fron the warehouse to the couriers. I find this very inconvenient because had they explained this to me I would have gone personally to a physical store and not ordered online. Now i am unable to cancel my order because this order is being processed. I am without a phone yet I have already paid for.