During the last 2 months I have been on medical leave after having a seizure followed by brain surgery. The doctor told me I would be unable to drive for at least 3 months and as I work at a sales job where I have to travel I was unable to work. During the entire time I was on leave and recovering I was called dozens of times about customer service issues and my manager calling asking when I would be back at work. He insisted on more medical documentation about my surgery as though he didnt believe such a long absence was necessary.
A few days ago I recieved a call from my district manager letting me know they were terminating my employment for a mistake on some paperwork I had made before I went on leave. I am looking to confirm the following before I contact an attorney:

1. My employer is not allowed to contact me during leave, let alone harassingly
2. They must take up all problems with me when I return to work and cannot discuss or terminate me while im on medical leave.

There are other issues as well, but there are the big 2. Any help would be great.

Thanks