Not Sure About Hh

I feel terrible. I was a hospital nurse, but needed a change. Was told HH would be a good fit. I worked at a HH place with a person all last week and loved it. I was so happy. Then this week I'm on my own. I only work a couple days/week. Well I was told I could ask a couple people questions, but when I do they make me seem like I'm bothering them. I so wanted to learn this job. Instead this is what I did for the two days on my own: mgr came in and dumped someone else's work on me, got a call to do a project because someone else didn't want to do it. Then another nurse had me do one of her visits. I'm making visits I'm not sure need to be done or if they can wait or what! Some of these visits I go on are just to check in with the patients/staff, not a skilled nursing visit. I was suppose to be filling in for a full time nurse who is on leave. They nearly expect me to do in 16 hours what takes her all week. I'm not happy and ready to not go back. I was told to speak up when I feel overwhelmed. Well I did that and they made me take care of everything regardless how I felt. I'm doing visits I really don't feel comfortable doing. Not dangerous situations - I would refuse those, but just not ready for some visits. I wish there was more training. I have had little training. I was promised things I'm not getting. I know it's still early, but it's not happening as I told it would be. The one mgr who promised she'd be there for me hasn't stopped by once or called me on my first two days. Maybe that is why they can't keep anyone. I really don't know if I want to go back. I'm so sad about this because I really wanted to make it, but I'm getting dumped on! Help!!