Nedbank *****ing your money without you knowing it

In December 2020 nedbank deducted R185 x 2 from my account as maintenance fee, but my fee is R115. If I would not have noticed if I did not check my bank statement on the app. They reversed the funds eventually. Today I noticed that nedbank again deducted R185 for maintenance fee. I checked my statement on the app and notice that R115 was deducted twice from my account during January 2021, but it only shows once on my actual bank statement. I feel nedbank is *****ing my money and If I did not check my statements, then I would not have known.