So completely disgusted in Nedbank!

I checked my bank statement because I couldn't understand why money kept going missing on my account. I noticed that 4 times R90 was deducted with the caption honfees. I contacted the customer care centre to find out what was going on and they claimed that I had insufficient funds in my account so they charge me R90 per transaction. Yet at the time of the purchases it showed that I had sufficient funds. How does it make sense to allow a transaction to be accepted without sufficient funds! I got told I can dispute it by going down to my nearest branch. I will definatey be going to my nearest branch but it will be to close my account! Absolutely pathetic! I've had issues with banks before but I've never actually had one that *****s money from me! And here all this time I praised Nedbank to my friends and family...well done Nedbank you have successfully lost what once was a very loyal customer