Clientelle - unauthorized debit order (policy)

Clientelle got my personal information and used it to create a policy with them. They arranged a debit order on my account and a fee of R289.00 was deducted. I called them on 30 August 2022 to cancel the policy and to enquire as to how they got my personal details. The person who answered my call at their call centre ***) went into a huge discussion why and how and where etc. I kept on telling him that he must cancel it as I did not agree to it. After he talked for about minutes and wasted my airtime he dropped the phone in my ear without giving me a reference number for the call. I don't know how clientelle get personal information? I never gave them permisssion. I am protected by the POPI Act and know my rights.