[sistergoldenhair]

Sounds like he didn't get his last delivery.
Tanker pulls up, puts the hose on the underground tank, collects the cash.
The owner doesn't check his levels, runs out of gas and assumes it was stolen.

[Cvengr]

I agree, accounting error seems more likely. Tanker carries 7500gal, so 7300 reads as though the transfer began and ended with nothing in between.