Unauthorized debit order

<p>an amount of R299 has been debited off my account without my authorization. This is not the first time this company takes money from my account. They change their codes every time. I have no idea who they are, where they got my details from. Their ********** 750 is always engaged. Every time I contact my bank FNB to stop these fradulent transactions which costs me R17 that I have to pay for! however these *****s keep coming for my money.</p> <p> </p> <p> </p>