Taking a charge

[CW30]

The offensive player was dribbling baseline, either to shoot a reverse layup or pass. The defender cut off baseline (which he is suppose to do, GOOD D) offensive player tramples the defensive player and defensive player is called for a foul. All because the ref says you cant take a charge under the basket. I didnt belittle the ref, I just told him that you can take a charge under the basket. We do play highschool rules, and the ref is a high school ref.