My Controlling Monster In Law

I am so glad I came across this website. I thought I was the only one in the entire world having a controlling and an over bearing Mother in law. I think I have the worst problem. The problem is both my mother in law and Father in law live with us. They were probably Satan`s kids or something. Thats how evil both of them are. She doesn`t want me or my hubby to spend any time with each other. Everytime we plan something like romantic evening out or something she pretends to be sick and feigns attention. And finally if somehow we manage to get some time away from them she calls us on both of our cell phones and keeps disturbing us. Inspite of all this my husband doesn`t even understand what she is trying to do. I have told him several times and tried to make him see through but it always backfires on me and I feel I am an outsider in my own house. We both have pretty good Jobs but my husband works from home and every day she sits with him and tells him as she should be the head of th house and she is so twisted that she even listens to our private conversations even when we close our bedroom door and when I happened to catch her doing it she just said she just happened to stand there and nothing more. Unfortunately I get no support from my husband in this regard. They are pretty well off and have good money coming in but inspite of that we have to provide them with everything. Even for her own personal needs she deosn`t spend her money. I am so sick and tired of this but I see no light at the end of the tunnel. Please help me. What should I do. I don`t want my marraige to fall apart because of something like this but its now getting unbearable.