Steeling from a grieving widow

My husband passed away on 17.02.23, I canceled my life policy from March 2023 as I can no longer afford it. They deducted the amount again from my account in April they told me I need to give a month's notice. They tried everything to take my money now I lost R 5220.08. How can they be allowed to keep on doing this? I started in Oct 2019 so they took a lot of money from me. Its time to stop now