Sirius, Gringotts, & the Firebolt

[gelite67]

No: HPFGUIDX 114222

Why didn't the Goblins turn in Sirius to MOM when he ordered the 
Firebolt for Harry in POA?  I know Crookshanks took the order, but 
the book says that the money was taken from Sirius's vault -- who 
else would authorize such a transaction except Sirius?  Maybe 
Gringotts has a really strict privacy policy (being facetious here).  
Maybe it wouldn't have mattered -- who would the MOM have 
interrogated -- Crookshanks?  :)

Angie