Got bait and switched, contract job for 5-days a week but as soon as I got hired on mandatory 6 days a week

do I have any recourse here?

I called my agency but they were like “overtime as needed” is clearly in your contract….. and my supervisor has stated that “every weekend we need you working Saturday period”

most of the friends I made at the employee orientation are fucking gone, and my trainer that trained me here is gone already too

I’ve only been here like 4 months but no weekends other than Sunday kinda sicks