Reversed debit

My problem started on the 24 Dec when I got a notification for a debit order, the amount was R120. I was able to reverse this transaction as it appeared on my debit orders on my app. Then again on the 28 of Dec I got a notification for R105. This one I was also able to reverse as it also appeared on my debit orders. Today by chance I noticed that there was another R105 that was taken on the 31 Dec. They also took R119.99. What got me fuming was when I opened the transaction I noticed its all going to the same account. The account which I had reserved two transactions from. How come it didn't appear on the debit orders like the other two. How can the same account which I have reversed payments under the reason that I didn't authorize this transaction be able to do this 4 times........ To the same account number ********** 368 always with different reference ,I smell a rat