My H and OW saw nothing wrong with her calling our home, and vice versa. H said "Its cheaper than using our cell phones". Ok. Whatever. One time he let my D6 talk to OW on the phone. He denied this with a passion until I told him OM had recorded the conversation.
You can do nothing about your H and this visitation thing, other than to protect your D (not telling her in advance about the visits, in case they are cancelled). Let him falter, document, but stick by the visitation schedule times. If he wants more time, say 'fine', but don't count on it. Its one thing to let you down (awful), but his own daughter? Awful.