Called on, or didn't leave home (7,2)

I believe the answer is:

stopped in

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'called on' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'didn't leave home' is the wordplay.
'didn't leave' becomes 'stopped' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'home' becomes 'in' (to be in is to be (at) home).
'stopped'+'in'='STOPPED IN'

'or' acts as a link.

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