Vodacom is taking us for a ride!!

I am extremely disappointed in vodacom and their service . After visiting the branch in West Gate mall they gave me the impression that the IPhone SE is the same size as the iPhone 6. I then ordered the iPhone SE online just to realize that the branch at West Gate mall was lying to me about the size of the phone. I contacted Vodacom and explained to them what happened and said that I want to reverse the contract and will be willing to take out a higher package . The guy said no problem and that "RAM" would come and collect it the next day. It's been two days now and still haven't heard anything from Vodacom and "RAM" still hasn't picked up the phone. I decided to give vodacom a call to find out what is going on, and the call center agent said that it will take between 7-14 working days for them to pick up the phone because they have to see when they will be in the area again. They said it is stated on the T&Cs. So I go and look for the return policy aT&Cs and find nothing. Thus I phone vodacom back and ask for the recording. They give me the story that I need to email admin department. However, on the internet it says the recordings are available online. This is a violation of your own T&Cs. All I want to do is return the phone and upgrade the contract to a higher package. Is this too much too ask?