BIG MISTAKE TO BANK WITH NEDBANK

I am so disgusted in the service received by Nedbank. I have an account with Nedbank since September last year thinking that it would be great but I havent had good experiences. When I swipe my card, Nedbank only deducts the money from my account 1 or 2 days after the transaction. And if there is no money in my account they charge me R90 and a service and interest fee. I only receive sms notification 2 days after the money has left my account. I cannot keep paying Nedbank money because they deduct from my account later than they should. I now have a negative balance of R2500 which includes returned debits and bank charges of R850 for June month. After receiving my statement this morning, i called the customer service to close the account and make arrangemenets to pay this balance off. I was kept 35 minutes waiting on the line and i ended the call. My 8 months banking experience with nedbank was terrible!!! I demand that this amount be reduced as it is Nedbanks mistake for not deducting on time. Further steps will be taken against nedbank should this matter not be resolved.