I can see that but without interviewing the customer you can't determine their motive.
This is essentially a 'hit-and-run'. The customer who committed the 'hit-and-run' fled the scene without being interviewed.
A proper investigation would include questioning all involved.
“The customer who committed the ‘hit-and-run’ fled the scene without being interviewed.”
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I’d say it’s more like the manager saw a train wreck coming down the tracks, decided it would be a really good idea to jump on board and threw himself on to the tracks. Intensive stupidity at work. A real “social” Darwin Award winner.