Tired of following up

I struggle with Vodacom since last year. I upgraded and when I received the phone it wasn't the one I was looking for so I phoned them to collect it and after 3 weeks the did collect it but the sad part is they charged me for a phone that I don't have. Every time I phone them they put me thrue to someone else. I cant even keep track of all the people I spoke to. They are very easy to take money from your account but when the need to pay it back there is a lot of stories. I'm waiting 2 and half months for them to pay that money back I my personal account. ???