PAYOUT DATE NOT CORRECT

I have put I a notice to close a 32 day deposit account at the Nedbank branch in Sasolburg who sent it through to their head office on 11 Feb 2016, from where they have to handle the payout on 13 March 2016 - now I found that the date loaded on the system is 23 March 2016 and I find that totally unacceptable, why do I have to wait 42 days in stead of 32 days for the payout now? this is ridiculous!