ABSA' incompetence

Last month may went to Absa to ask them to reverse the money that was deducted to my account.. they say i bought on line i told them i didn't... i was told to send an email to disputes i did.. didnt get any response...then i was told to change my card,i did.. then again month end of june same people dedicted my money again , went back to absa i ask them how come because i have change my card i was told that the person who was helping me didnt cancel that account. I ask the again to reverse my money i was told it is not possible..i must wait for 14days as they a opening a case of *****. I askwhy was the case not opened the last i was there.. their told me it was a mistake... the person that was helping me was suppose to open a case of ***** not dispute... im still waiting for them to reverse my money for two months.