Take pictures of whatever the issue is and/or have all communication between you and the roommate in writing (text) so you can provide evidence. Check if your state is a one-party or two-party consent state for recording. You can also go above the RA and go straight to Residence Life and create a case. They might move you to a different room or a single just to cover their own asses.
God I went through this. I had pictures and emails of everything that was happening. I had met with the RA and area advisor (an adult in charge) multiple times to express my fears not only about the situation but about how meditation might not be successful because my rm was a little shit (I did not say little shit in the mtg tho lol) we talked over strats before hand to stay calm and bring it back on track if it got out of hand. I never saw my rm so confronted