Bad service and not getting help

Vodacom really does not assist with anything. I did an upgrade, phone got to be find out it is not what I wanted, returned it within 14days and I was charged for the phone. Now I want my refund they telling me they cannot refund me. So I am now paying for a device that is back with them, I am paying for a phone I did not use? Came here because I did try several times speaking to Vodacom but no one is willing to assist. I called more than 10 times, sent emails and even chat to Tobi but still one will tell u this and the other will tell u this but now they advise they cannot refund me that’s the whole reason I want to write about this bad service and them consuming my money for nothing.