Unauthorised transaction

I have just had an amount of R553.54 card payment from my card from an entertainment: Digital Subscriptions which is a recurring card purchase from a company i know nothing about. I called in and had my cards cancelled which I will be charged R140 to get new cards. I was told that my issue will be escalated so that i have the amount debited back to me. This process involves an investigation that will take up to 7 days and I there is a 50/50 chance of either getting or not getting the money back.