Perhaps dial 999 and put empty gesture on the record (3,4)

'perhaps dial 999 and' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'empty gesture on the record' is the wordplay.
'empty' suggests removing the centre.
'on' means one lot of letters go next to another.
'record' becomes 'L-P' (abbreviation for long play record).
'gesture' with its middle taken out is 'ge'.
'ge'+'the'+'lp'='GET HELP'

'put' is the link.

Can you help me to learn more?