Fees

I have a current account with no overdraft facility (which is what I want). Made 3 purchases on the account and the transactions was successful. Checked account 3 days later and noticed there is a negative balance on my account with 2 honfees which made me even more broke. Phoned customer service and request was sent through to branch for refund. A few days later check account again and another honfee appeared for a purchase I made roughly at the same time as previous. Got called today but no refund on honfee because there was no money in my account... then how did the purchases go through if there is no money in my account and no overdraft facility. Why did that little machine not tell me \Listen here boet. Eish no money. Use your credit card\" or \"I can't connect to your account to take your money. Go to the ATM\". Now I have to pay for a device which could not do it's job and I am not even responsible for that system. I understand if something doesn't work but why must I pay because it doesn't work? Not a happy nedbanker."