Threatening Emails!

Firstly, I noticed weird amounts being deduted from my bank account. When I looked into this I found out who it was and tried to stop it. Now I have been receiving threatening mails from Lifestyle legal (Pty)Ltd and many smses stating that Loan Tracker SA and Loan Zone SA demands I pay them R2000.00 They did not render any service to me, I have no written agreement, I did not sign anything, and then they went and obtained my banking details and personal details without my permission and have now sent me a court summons to pay this amount. Surely the court should look at if this is legal. How can some random person demand this money from me and I have never had anything to do with them.

I say that Lifestyle Legal, Loan Tracker SA and Loan Zone SA should be investigated by the Consumer rights complaints commission as obtaining peoples personal details without their permission and then demanding I pay them is definitely against the law. I have emailed them several time stating my case but they ignore my mails and just send back more threatening mails.

How can I stop this? Apparently they have sent a court summons for me, however, I have not received anything. Can someone please advise me on what to do?