But a Rabobank spokesman said it gave everyone who asked for it more time to make the transition.
The bank said it understood the change had been disappointing for a small portion of customers and acknowledged its communication could have better emphasised the flexible approach it was taking to the timeframe.
"If they haven't already, we'd strongly encourage any impacted Rabobank customers to get in touch to discuss any support we may be able to provide," a statement said.
It said Rabobank was committed to supporting the agricultural sector for the long term and is one of the few banks currently growing its share of the market.
"We have also consistently rated the highest of all banks in Federated Farmers banking survey in terms of customer satisfaction and customer communication."
Banking Ombudsman Nicola Sladden has said banks need to have a good reason for closing customers' accounts- but that reason could be a commercial reason.