School Problem

I’m currently a university student. I’ve been working so hard on one of my classes. I wrote a 7 page essay and did a small prototype game. I put so much time and effort,since this was a huge project. I received my grade today and she gave me three big zeros, my grade drop from a A to a D. She said my grammar is so bad and hated my game. Also, keep in mind this is not a english class. I know my writing was not so bad nor my game. Ive always gotten A’s in my papers in other classes. She said to go to tutoring to reconsider my grades, but this is a online course. I took this course because i have a full time job, i have no time to go. I emailed her about this,all she did was send me the links to tutoring after i stated i have no time. She recorded herself saying she feels frustrated with my work and my grammar. She humiliated me by saying she is disappointed that i haven’t learn nothing from this class. I honestly thought i had a clear understanding of this course... she said my work is completely wrong,however, she was the one who told me to do it this way. At this moment i feel like a failure, humiliated, and hurt. I never had a rude professor like her. I only have 2 more weeks left of class. I’m not sure what to do, i feel like im going to die inside and i keep crying out of anger and disappointment of myself.