Kohanic is it possible for your mother to attend one visit with your psychiatrist with you to find out just how ill you are? In your first post you said she thinks you are using your mental health as an excuse but from your description you are very unwell.
Cold calling on people is one of the most stressful things a person can do do. Cold calling to talk about religion increases the stress by a factor of 10! Your mother needs to know from your doctor you're not well enough to do this, I feel.