Unauthorized debit order

i was debited without my permission by Sage for R99.00. I have no knowdledge of both and did not enter into any agreement telephonically or written with any of them. i have not made my personal details available to any of them either. How did they get my personal information? I want to place on record that I am not a client of Sage and Mutual Direct and never being their client before , but i have under questionable circumstances found that i am now a client of Sage and that is the dispute. R99 Ref. Mutual Dir***0 Sage151217