You did not help your case by telling the Property Manager how crazy she sounded. I can understand your frustration, and you seem to have valid issues, but regardless of what is happening, you to tone down the rhetoric, be polite, and stick to the issue of maintenance of the apartment.

And give some thought to moving. At least have a plan.

I feel so bad for you, really! Why is it the standard solution is to move? Its really not fair, but in this case it sounds viable. I also cant help but wonder why the maintenance man is allowed to freely enter, why not set up an appointment with him? Consider having a friend around with you as a witness. I would also set up a camera to record-pic and sound. I used to leave my computer on record, leave my cellphone on record as well and when my landlord was around play it back for him. I did win in court, and only one landlord in five ever kept my security deposit. That was before I got smart. Unfortunately, you have to document everything and just bring it into a courtroom if you cant get them to listen. I have personally found that when you hand deliver a letter and follow up and send email with attached recording files, this definitely should get them to respect you. Management companies have "employees" not owners, so your making them actually work, which they probably don't like. Keep it all business with the mangement company. The town where you live or city should have a town hall with appropriate offices for tenant advice as well. Believe me, they can become very effective should you get them involved! Good Luck!