Santum debit order nightmare after cancelation

I cancelled my insurance with Santum with insurance in April, and found new insurance. However they keep dectucting premiums. In June they hey deducted R1690 after I cancelled and that resulted in my debit orders bouncing and me paying bank charges and being in areas with my accounts . I called them and they said I never cancelled I requested voice recordings they said they will send in 72 hours but they never did. I let it go and kept quiet after they sent me a cancelation letter.

And in July they decucted R5 013,75 and again my debit orders bounced and I paid so much in bank charges I was left in arrears with my accounts for the second time and again they said I reinstated the debit orders when I requested voice notes to prove what they are saying they never sent.

I have suffered so much Because of Santum. The money I lost Because of them and they can't even send me my voice notes. I have fought them but I keep losing money Because of their irresponsibility ?

Its been a week and I still have not received any feedback from them with my recordings.

Please help me I'm desperate and suffering so much.