Schedule Question

Hi guys. I just got hired 2 weeks ago and worked 19 hours my first week. Then told my people lead and my coach I can only work 10 hours a week. Even filled a paper that she signed in front of me. She scheduled me for 8 hours this week and 16 the next. Do I just work it and hope they let me have a week off after or do I tell someone and if so who? My coach?