Crossword Genius

Rescued, thanks to caller? (5,2,3,4)

Ross

I believe the answer is:

saved by the bell

I'm a little stuck... Click here to teach me more about this clue!

'thanks to caller?' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'rescued' is the wordplay.
I cannot quite understand how this works, but
'rescued' could be 'saved' (similar in meaning) and 'saved' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for saved by the bell that I've seen before include "mice hoped to be" , "Fighter may be" , "Relieved by timely intervention" .)

I've seen this clue in The Telegraph.
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