You are not authorized to call this number

I am not sure how to send a private message. I did try all three steps and I still get the same message when I try to call those numbers. I have Koodo for my cell service and I am able to call from that phone, but I don’t have a long distance plan on it so I don’t use myself for long-distance calls. That’s why I continue to use my landline. I’m happy to send some of the numbers that I can’t reach, but I don’t  want to put it here if it’s going to be public. Thanks very much