Solitary type of bank worker on the phone? (5)
I believe the answer is:
loner
'solitary type' is the definition.
(I've seen this before)
'bank worker on the phone?' is the wordplay.
'bank worker' becomes 'loaner' (someone dealing with loans).
'on the phone?' indicates a 'sounds like' (homophone) clue (I've seen 'on the phone' mean this).
'loaner' is a homophone of 'LONER'.
'of' acts as a link.
(Other definitions for loner that I've seen before include "He's not a joiner" , "Non-conformist" , "Solitary individual, prefers own company" , "Solitary type" , "person, one hating company" .)