Scam hotlines illegally used for gambling (12)

I believe the answer is:

slotmachines

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

'scam hotlines illegally' is the wordplay.
'illegally' is an anagram indicator (not in the proper order).
'scam'+'hotlines'='scamhotlines'
'scamhotlines' is an anagram of 'SLOTMACHINES'.

'used' is the link.

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I've seen this clue in The Irish Times.

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