CPS left us a not to call them asap but won't answer our calls or emails what do we do?

CPS left us a note to call her ASAP, and we have made attempts to reach her both by phone and email she left with the note. She won't return our calls or emails, what should we do?

My father keeps calling CPS on us (they and the police said as retaliations against us).. but that they have to investigate anyways, and that I can sue him and so can the state for making false reports, harassment, ect.

I am always compliant with them as long as it doesn't break any rights. And some may call me dumb, but I invite them inside before they even ask to see inside, (AND VIDEO BECAUSE IT IS YOUR HOME IT IS YOUR RIGHT, IF THEY FEEL UNCOMFORTABLE THEY LEGALLY SHOULD LEAVE) and I'm always 100% compliant with them. I have not done anything wrong and have nothing to hide, as CPS even put in the reports...
and I like to prove it right away with out any warrents bc I just like to prove myself right away.

But she is neglecting to contact us back after we have been making attempts to call her (CPS ) back, what do we do?