I'm sorry you're in such a bad place today, but I'm glad you're angry about being treated like this. Complete and utter BS, from this perspective. You have a signed lease, you've made your unwillingness to have the sister there clear, maybe consider stopping taking their abusive calls for a while. Because that's what it is - abuse. You're a grown up woman and you have the right to say "get lost." The last thing you need is more stress right now.
Consider too having ALL of your husband's things moved out, and into a storage unit near him, once he has this job. The responsibility will be his, then, not yours, and you may be able to avoid some of these horrible phone calls with him. Your loneliness may leave you much, much more quickly if you can separate from his choices a bit more.
Hugs to you, friend out there!