Leave bank having emptied 'savings account' and duck into greasy spoon (4,3)
I believe the answer is:
cast off
'leave bank' is the definition.
'cast off' can be an answer for 'leave' (thesaurus). I am unsure of the 'bank' bit.
'emptied savings account and duck into greasy spoon' is the wordplay.
'emptied savings account' becomes 'st' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' is a charade indicator (letters next to each other).
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'into' means one lot of letters goes inside another.
'greasy spoon' becomes 'caff' (I've seen this in other clues).
'st'+'o'='sto'
'sto' inserted into 'caff' is 'CAST-OFF'.
'having' is the link.
Can you help me to learn more?
(Other definitions for cast off that I've seen before include "no longer required" , "unwanted garment" , "Rejected" , "When the stage has emptied" , "abandoned" .)