The probably also realized that when you call the police, at least one person's life will be destroyed.
Being arrested is now a life sentence.
A life of explain to EVERY HR department why you have an arrest record. And more often than not, your resume will be filed in the round can.
(And you cannot legally work for a bank any more.)
So, the police's typical MO is not to help settle things, it is to escalate them and destroy one or more people's lives.