"During their communication, they expressed their common will for a steady communication throughout the course of negotiations in order to have a mutually beneficial solution soon," said the official, who declined to be named.
The official said that the technical teams from Greece and its creditors -- the so-called Brussels Group -- would hold a teleconference on Monday and convene on Wednesday to speed up negotiations.
Three months of fruitless negotiations have raised tensions between Greek Finance Minister Yanis Varoufakis and euro zone colleagues in Riga on Friday.
Euro zone ministers - the so-called Eurogroup - bemoaned talks they felt "were going nowhere" and one minister said that maybe it was time governments prepared for the plan B of a Greek default.
Responding to reports that he was isolated in debt talks, Varoufakis tweeted a quotation by American statesman Franklin Roosevelt on Sunday which read "they are unanimous in their hate for me; and I welcome their hatred."
Varoufakis said the quote expressed his feelings in recent days.