Unauthorized deduction, ***********

I cancelled this insurance on the 3rd of March, and I only received an email on the 11th of March from their customer service help desk who requested my ID number and didn't revert back to me, on the 25th of March a sum of R1395 was deducted in my account, and when I requested the money to be reversed into my account immediately I was advise that it will take 7 working days, I should do it a dispute with my bank, which I did, but I'm still not get help from my bank nor the insurance company 3 debit orders bounced and the bank will charge me, and also illl be charged for the reversal, all I want is my money back into my bank account and my charges paid back into my account asap