Roommate called off of work every day I had off this week

About a month ago I moved into a roommate situation and I did not know this person before. I have 3 days off a week and really enjoy alone time, but he enjoys being social and pops out of his room every time I leave mine. He decided to call off of work every single day of my weekend so now I’ve been in my room for 3 days mad that I didn’t get a second of true alone time on my days off.