Emotional abuse, Help please?

So, my fiancé and I struggle quite terribly with finance and so we live with his parents.

My only parent, my mom, passed away 2 1/2 years ago. She left me the house she built about 25 years ago, thus is the house I grew up in. I am a home owner in Oklahoma where this house is, but we are currently living in south Arkansas. His parents have been emotionally abusive all his life and tonight they crossed a big line. I am 20 and am disabled from a previous infection that left permanent damage in my spine. I was very frustrated that the laundry machines have both been full for 3 weeks and we have been unable to get any laundry done. So much so that I've had to wear the same sweat pants to the physical therapy office for two days. We had to fight about it to get it done, since no one told us it was shared laundry from our bathroom. This resulted in them deciding to take all the towels out of the bathroom saying "if you can't fold them, f*ck y'all, you don't need them". I was also told that all I do is sit in our room and eat. (this is not what I do, however their 25 year old son does. That's not my fiancé)

We have no money and no way to get home to Oklahoma.

I have no clue what to do now... I'm scared to leave our room for anything. Help,.. anyone?