Callout procedure

At my center, the supervisors say that when we call out, we have to keep calling until someone answers. I called out this morning and after three separate calls of no one answering I went back to sleep because I felt like shit. I know that when I go in tomorrow, they are going to try and say that I needed to keep calling until someone answered. I do have the call logs to show I did actually call. Is there anything in any of the contracts saying this is a policy we have to follow? I’m in NY