[a_bonobo]

Sounds a bit like Australia's illegal Robodebt scheme:

https://en.wikipedia.org/wiki/Robodebt_scheme

The Australian system was simpler than the Dutch system, comparing social benefits paid with averaged tax-income from the ATO. It was a stupidly wrong calculation, the averaged income is much higher in people with inconsistent income than it actually is, so people were hounded by debt collectors for nonexisting debt. A$1.2 billion false debt for a nation of 25 million people. A good number of associated suicides.

Of course, there was no real accountability, with the system having been introduced by the previous government who is now in opposition. Money has been paid back but everybody involved still has their job.