Autozone Forced a re-charge to my Credit/Debit card after I returned an Item and left the store Macon Georgia

On Oct 17 I went to Autozone ; 905 Shurling Dr , Macon Ga  and bought Brake Pads which I later found out I didn't need. But as they didn't have my brake shoes in stock I received a refund for the pads and left the store.  Checking my Bank records on the 19th of Oct I saw that the original purchase was list on my account as well as the refund/credit but there was also a "Debit Adjustment" for that amount listed as a charge. When I called my bank , They informed me that Autozone had forced that transaction through after I left the store and without informing me. On Oct 20th I went down to see the Manager of the store to see if she could explain why they had charged me a 2nd time. She said it was the Bank. I again called my bank who explained to me what Autozone had done. I am satisfied that this is the fault of Autozone.