Debit orders

<p>I have a personal loan with Nedbank ,but I'm getting annoyed with the service .I requested my account to be debited on the 25th of each and every month surprisingly if the 25th falls on a weekend I'm being debited the day before of which there is no money in my account then .This is creating unnecessary charges on my cheque account of which I'm paying for not Nedbank,not to mention my credit score .I work for a private industry not government my money is available only On The 25th not any other date .This is not 1st time that this happens even last month .Please rectify and get this right ...and stop frustrating me as a client !!!</p>