If you were waiting for a sign that things have gone badly, this is it

Reuters reports, citing an EU official, that European Commission President Jean-Claude Juncker refused to take a phone call from Greek PM Tsipras on Saturday because Athens has not yet delivered proposals promised for last Thursday.

"The Greek prime minister requested a phone call for 1100 CET on Saturday, but Juncker declined because there has been no progress in the discussions and proposals that the Greek side promised on Wednesday night to deliver on Thursday have not arrived," the official said.

"There have been no new developments so there was nothing to discuss," the official said.

This is going to turn into a street fight.