Refusing to reverse my money

Accidentally transferred money to the wrong cellphone number. Called Capitec bank and they said the person's phone is off but the money if not in the person's account as yet so they froze the money. However, they are refusing to reverse the money. I, apparently need to get the other person's permission for MY MONEY to get reversed!. This number is has been off and doesn't seem like it works. We called it immediately after transferring money but still Capitec refuses to reverse the money. I'm really ****ed off and disappointed with the service.