Kapusta, the point can’t be stressed enough that tochacha does not mean harsh scolding (unless only that will be effective).
In s similar vein, someone once complained to the Chofetz Chaim that no matter how much he yells at people not to be mechallel Shabbos, they don’t stop.
The Chofetz Chaim asked him if when he puts on tefillin, he yells.
He responded that there’s no inyan to yell when putting on tefillin.
The Chofetz Chaim told him that there’s no inyan to yell when giving rebuke either.