LIFESTYLE LEGAL - ***** ON MY NAME

lifestyle legal started debiting my bank account from early this year and I did not even know who they are. I kept on doing a stop order on it. every time I did a stop order they would change the reference number and debit my account. now I'm receiving emails from them demanding payment from them for over R1000 saying I signed up online for their subscriptions which I did not do. even when I asked Absa for a contact number for them they gave me a number that they were given and that number is not even for them. now they sending me final demand letters with no signed proof of acceptance from me. they just keep saying I clicked online . how can that be sufficient proof? I kept telling them that I did not subscribe to this and that I am not paying for it. they ignore my replies to their emails and keep on sending me final demand emails and court summons to be issued to me when I did not subscribe at all!! how can I take this further and get them off my back as this is now *****!!!