Ally, I think that you work in the firm that I used to work in. It was unbelievable, the partner was a moron and a control freak. It was my first job out of school and I was so misrable. I went to school to a legal assistant, they wanted me to be the secretary. Then they were mad that I couldn't type, well duh, I didn't go to school to be a secretary. I actually got fired because the partner told me he didn't want to be interupted for any reason. Then someone important came in, and me I didn't know who he was and told him the partner wasn't available. He fired me for that!!!
What I found out was that I didn't really want to work for lawyers. Maybe I should have found a different position.
In our paper there are always ads for Lawyers in Legal Aid. They don't make a lot of money but hey it would be a better job and you could look for something better. I agree that it is easier to find another job while you still have one. Another thing you could do, maybe can you hire a firm to help you find a job. Do you have any associates from the last job who have moved on, maybe they have some pointers on a new job. Something isn't working for you, see if you can hire someone who could critic what you are doing and see if they could help you make changes.
Maybe being a little more forceful in the job you have would help. Definetely tell the office staff that you will no longer answer the phone. Tell the person who is doing the scheduling that you will no longer file summons for them. If they fire you because of it, how much worse would that be than what is going on now.
If you want my honest opinion, I think that you are letting this firm push you around. Try standing up to them. I know that they might yell at you, but so what, yell back. Don't do their jobs for them. Easier for me to type that to actually do.
P.S. Sorry for the spelling errors, I am in a hurry.