Caller wasted time on charge for use of storehouse (9)
I believe the answer is:
cellarage
'charge for use of storehouse' is the definition.
I can't tell whether this definition defines the answer.
'caller wasted time on' is the wordplay.
'wasted' indicates an anagram.
'time' becomes 'age' (an age is a period of time).
'on' means one lot of letters go next to another.
'caller' with letters rearranged gives 'cellar'.
'cellar'+'age'='CELLARAGE'
Can you help me to learn more?
(Other definitions for cellarage that I've seen before include "payment for port's security?" , "Charge for storing (wine?)" , "Stores" , "Cost of storing wine" .)