Bad customer service at Vodacom Express

I recieved my contract phone at Vodacom Express at 05 September 2019. Many things weren't explained to me on the day I app**** for the contract and the day I signed the contract, things like "There are Contract Terms and Conditions you need to read carefully" and that I must know that there's a connection fee . And it will be debited in my account. I contacted Customer Care many and I was advised to go back to the shop and send an email to ***. I did that and I was told by the consultant assisted me that they will contact The Cancellations Department and tell them about my problem. And everything I have paid will not be refunded. Yesterday the manager from the store in which I took the contract from phoned me and explained everything and told me that they cannot help me, I should take my phone. He asked the staff that how can a customer sign and leave the store without understanding anything? I went to the store today and everything was explained to me. I was told that the problem is my signature. A signature binds you as customer. They said there's nothing they can do. *** hasn't contacted me. I really wish there were other options I could consider. Now I am stuck with something I am not happy with anymore because of the kind of treatment I have recieved at the shop initially and I regret getting the phone. I need help. How can I return it?