********** transactions after credit card was destroyed

3 ********** transactions initially has gone through my Absa credit card - all from the same company. My credit card was stopped and destroyed. Absa has refunded 2 of the transactions. Again, to my disbelief, yet another 2 has gone through my account. How is this possible that Absa, now on the lookout on my account (or so I thought), let 2 transactions again through on a credit card that has been destroyed. How do I trust a bank that doesn't look out for me? I have been with Absa for 37 years..this is the last straw.