Unauthorized Debit Orders from AATrading www.homesure24.co.za

Received unauthorised debit orders from AATrading www.homesure24.co.za with Reference o25-2397. I have never heard of these people, i don't even have a home in KZN , i live in Cape Town and have never owned or rented in KZN!! Everytime i try to call them on their number to tell them to stop debiting my account ********** or ********** it is engaged. I am not even a Member and have never come across this website or signed up for any of their services.