Amanda Bynes -- I Hate My Parents For Deceiving Me

Amanda Bynes is filled with anger as she sits in a Pasadena mental facility ... after her parents created an elaborate ruse to get her committed.

TMZ broke the story ... Amanda's parents worked with Sam Lutfi to lure her from NYC to LA Friday. Lutfi convinced her to take a car service to what she believed was a Pasadena law office, where she would meet with a lawyer about suing her parents for abuse. The building was actually a mental facility. When she walked in the front door, she was restrained and involuntarily committed.

Sources familiar with the situation tell TMZ ... Amanda feels utterly betrayed and says her relationship with her parents is "destroyed forever." Although she's had a poor relationship with her dad, she had warm feelings for her mom ... until Friday.

We're told Amanda is in the women's lockdown section of the facility ... where she is showing fits of anger. Doctors are medicating her, but it takes time for the meds to kick in.

Here's the long-term problem. As TMZ first reported ... Amanda's parents will seek and, almost certainly get, another conservatorship before she leaves the facility in 2 weeks -- doctors got the 72-hour hold extended by 14 days. But everyone involved concedes ... it will be extremely difficult to manage Amanda given her hatred for her parents.