Putting a false adverti*****t

They sold a false advertising that i'm going to pay R50 p/m however a week later they took R21 000 in May,from my Absa Credit card,on the 18/05/15 I sent an email to the customer service however every time I try to contact them they always run away from my calls,My Husband had to join his membership no: is PLPA106137 in order for the refund to be processed back into my Credit card and its still not refunded.which means that now they have double charged us and no feedback is given to us.