Useless system and customer service

I called the call Centre to cancel my device insurance on 28.10.2020 and spoke to Priscilla. As apparently insurance continues even if the device contract ends but they don't tell you that fine script. I asked for a reference number and was given my reference nr. Assuming it was canceled. I noted a strange debit order after checking my bank statements. They without my approval setup a debit order on my bank account as the original contract was debited from vodacom. They debited my account for November December and January 3 different amounts. More than I paid when it was debited by vodacom . I called the call Centre again on 10.02.2021 and spoke to Lerato. Lerato transfered me to Thando. She informed me that Priscilla did not cancel the insurance as said but that she will cancel it for me. I received a sms that it is now canceled and Thando said that she has requested a credit on my behalf. She said that I should give 48 hrs in order to have a progress update and feedback and that she will call me back on 12.02.2021. No call back received so I called the call Centre back on 15.02.2021 after being on the phone holding to speak to a operator i eventually got assigned to speak to Lerato. After her checking the system and asking me to hold for 20 minutes the line was dropped. I called back and spoke to Nayo. Nayo told me that they reassigned the ticket and I would have to wait 48 hrs again. I asked to speak to a manager but no manager is available. I asked to speak to Lerato and was told she is on another call. I said I would hold for her. After holding nearly 5 minutes I was told she is on lunch. I am very frustrated with Finrite pty Ltd as they have the most useless system in place. How many times must I cancel my insurance and they take out a debit order on my bank! This is horrible service