Eurozone finance ministers have ruled out any further talks on a fresh bailout for Greece until the country holds its referendum on Sunday.
Greeks will be asked to accept or reject proposals made by creditors last week, with Prime Minister Alexis Tsipras urging a “No” vote.
Finance Minister Yanis Varoufakis accused the creditors of blackmail.
But he pledged a deal would be reached soon after the vote and that current limits on bank withdrawals would ease.
Greek banks did not open this week after the European Central Bank froze their liquidity lifeline.
Withdrawals from cash machines are capped at just €60 (£43; $66) a day but some bank branches have reopened to allow pensioners – many of whom do not use bank cards – a one-off weekly withdrawal of up to €120.
Long queues formed outside banks for a second day on Thursday morning.