The tumult has already hurt regular Greek citizens, with some retirees left in the lurch and unable to withdraw their pensions.
Many elderly Greeks do not own bank cards and make withdrawals in person at their bank branches, so they find themselves completely cut off from their money.
Thousands of angry pensioners besieged the country's banks yesterday, after 1,000 branches temporarily reopened to allow those without cards to withdraw money from their state pensions.
Pensioners with surnames starting with the letters A to I could withdraw half their pensions yesterday, said Mr Pericles Boutos, who is Greece's Ambassador to Thailand and is also now accredited to Singapore. He told The Straits Times that the rest will be allowed to withdraw money today and tomorrow.
The decree to impose capital controls and cap withdrawals at €60 (S$90) a day originally exempted pension payments.
This privilege was revoked about 12 hours later.
Greece's cash-strapped government has been finding it increasingly difficult to meet monthly pension payments and pay salaries to public servants.
About 57,000 Greek retirees will also not receive their pensions this month.
Pensions are a significant sticking point in the stand-off between Greece and the International Monetary Fund, the European Commission and the European Central Bank.
Greece's creditors are insisting that the country impose severe tax hikes and pension cuts to secure much needed loans.
In addition to the call for increased taxes and reduced benefits, there is also a demand to further reduce the meagre pensions most Greeks receive.
Severe funding shortfalls remain. Greece's pension funds have lost at least €25 billion since 2012.
The system remains mired in bureaucracy and the pace of change is extremely slow.
There is also a backlog of pension applications that will add to the country's existing tally of 2.65 million pensioners.