1) It is very difficult to report because the party who made the error is a huge bureaucratic outfit that probably will not know what I am talking about when I report it.
2) The amounts are very low, lower than what it would cost them in getting an override to reverse their program and charge me for what should be charged for.
3) The entity has caused me agmas nefesh in the past (actually not in the past but right now) that caused me far more of a loss than the little error they made in my favor.
I guess I am mechuyav to report it if I ever figure out how (I have a week anyway because I’ll only know it is an error at the end of the month).
Or am I mechuyav, especially as I just about know that they will never correct the error (I actually called them all the way from Ukraine when it happened the last time and unless the amount is just too small for me to have noticed, it never was taken back from me) and that my report will land in a dead email box.