A lecturer who repeatedly fails students with a severe prohibition

Lecturer 1 does not come to teach, but everything is done via the college's modem.
He devised a difficult and tedious study program that burns up a lot of time for everyone.
He is also constantly stressed with assignments and a tight time frame to submit a really malicious plan to abuse students.
Of course, they only answer him via the computer, so there's no one to talk to.
 
Everyone gets angry at him again and again, and they really come to a point of great hatred for this man, and they go over and over again about 'You shall not hate your brother in your heart.'
We've already passed the first degree. We've seen tough professors, but such meanness is rare. Just abusing.
 
Is it permissible to contact the college administration to stop the employment of someone who is hindering everyone without being hateful?
 
The question is real, the distress is truly terrible.