You were really brave to phone. I'm sure it's hard to hear your CPN is off, but them being off isn't necessarily the same thing as a rejection. They are just not working right now. It sucks that treatment providers have to take time off and cannot always respond, but that has nothing to do with you. That means they aren't helping anyone else while off either.
Is there a way to leave a message for them to see when they return? If you don't think you will be okay until then, can you phone back and ask if there is anyone covering for them or what other support options there are?