The government remains optimistic, however.
Economy Minister George Stathakis told a Greek television network Thursday that he believed the country could reach a deal with its euro zone neighbors early next week.
"I believe that at the beginning of next week we will have an agreement on the package of reforms the Greek government is proposing, and on the funding of the country," Stathakis told Antenna TV, Reuters reported.
That confidence may be misplaced, however. Greece -- the recipient of two international bailouts worth a total of 240 billion euros ($262 billion) -- continues to struggle amid a deteriorating debt situation, high unemployment and lack of structural reforms. Adding insult to injury, earlier this week it was reported that Greece was likely to run out of money by April 9, making its reform efforts even more crucial.
Read More'End of the road' for Greece as cash runs out?
It was granted a four-month extension to its current bailout program, which is overseen by the European Central Bank (ECB), International Monetary Fund (IMF) and European Commission, in February but a final tranche of aid from the program will only be released once concrete reforms are implemented a condition designed to pressure the new left-wing government to act quickly.