I owe cellphone insurance I never took

06 March 2020 I paid up my Edgar's account. On 12 October 2020 I received an sms that I owe Edgar's R473. I called and was sent from pillar to post, until Chane told me that R473 is for the cellphone insurance. I never took cell phone insurance at Edgar's. She gave me a number to call, but the phone rang unanswered Solution to this matter 1. Please send proof of recording or signed document when I was taking this insurance. 2. Clear my account and close it.