Ariana Grande called out by Jennette McCurdy

Ariana Grande co-starred with Jennette McCurdy

Jennette McCurdy never wanted to do the show

Jennette McCurdy was promised own show

Thought Jennette McCurdy couldn't lead a show

Combined iCarly & Victorious for spin-off

Jennette McCurdy complained of favoritism

Had two movie offers

Dan Schneider wouldn't let Jennette take out work

But Ariana Grande took off for Billboard Awards

Did box episode to skip filming for week

Ariana Grande is being unfairly blamed

Dan Schneider is the only person to blame

Jennette McCurdy should focus on Schneider