forgo daily

I just thought of something as I was on the phone with a guy from JCPenneys. He was looking for the heads of the house which aren’t here at the moment. He asked when a better time to call would be, and I said later in the day. And he said after what time? And I said I don’t really know. And he said ok, we’ll just try back later. So I wonder.. if we give them a specific time to call back after, are we giving them permission to call at that time? Because I thought I heard that they couldn’t call after 6pm. Although I could just be wrong in all areas here.