M.P.
I would talk with an attorney about filing a lawsuit against your employer for having a hostile work place. I would also find another job. I think you can sue even if you're not working there at the present.
I also suggest that you consider getting a restraining order so that your employer cannot put the two of you together.
Have you talked with HR and received no help? Have you talked with your supervisors supervisor? If they've not been supportive this is further grounds for a law suit.
I suggest that you get medication to help you with your anxiety.
And most of all, look for another job. Your life isn't worth continuing to work here.