Call – phrasal verb

Call for – to need something

They called for help.

Call for – publicly demand something

The media has called for the minister to resign.

Call in – telephone a place, esp. where you work

He’s called in sick today.

Call off – to cancel

The unions have called off the 24-hour strike.

Call on/upon somebody – ask/demand that someone does something

I call on you to sort out this mess.

Call somebody out – ask someone to come in an emergency

We called out a plumber on Saturday afternoon.