Phrasal Verbs with CALL
to publicly demand that something must happen
They angrily called for his resignation.
to ask someone to come and help
A specialist was called in to assist in the operation.
to cancel something
The game was called off due to bad weather.
call on/call upon
to formally ask someone to do something
He was frequently called upon to resolve conflicts.
to criticize someone
She called him out on some contradictions in his story.