Liberty Life's failure to follow through cancellation instructions and to remove banking details

We cancelled my husband's policy on the 24th of April 2025 and we specifically spoke to accounts department and my husband sent an email at 21:38 that same day to instruct cancellation. The accounts agent stated that he should request Liberty to remove his banking details which he did. We were even told that we are still in time before the cut off date to cancel the life policy, yet they still debited the amount resulting in us having to pay R40 for the bank to reverse the debit order. Needless to say the shocking customer service speaks for itself hence why we left Liberty Life. They tried to coerce my husband into keeping his life policy with Liberty after he gave instruction to cancel and they failed to comply. Liberty should be liable for the bank charges we incurred due to their failure to follow our cancellation instruction.