HONFEE charged by Nedbank on Positive accounts

Just went into my cellphone banking app and noticed balance issue on my Acc. Nedbank charged me two Honfee amounts for R90 for purchases I made earlier this week even though my account was in positive and money did go from my account when I made purchases. What sneaky tactics is this. I wouldn't even have noticed if I have checked my balance. So I'm being charged R180!! for items paid for with money I had in my account. Really disappointed.