Do you qualify for state childcare assistance? A lot of times your local childcare resources will have a list of other dcs or centers so if you're really unhappy with this place, then maybe it's time to start looking?
Sometimes dcs do what's easiest for them, same as parents do sometimes. But the fact they're lying about it all and don't seem to want to work with you about it would rub me the wrong way. It must be a difficult place to be as a parent.
Only you know if it's terrible enough to switch childcare or not. There must be other options out there?
Have all of your children gone there? Does your gut tell you they're happy and well cared for, safe, fed right, that sort of thing?
You don't have to answer, just things to think about. Wishing you the best of luck and hope they will at least stop lying to you.