Maryelizabethrose - as others have said, you just have to follow parent's wishes. However, in the meantime, rather than trying to communicate by phone, which seems to be a problem, ask your son to send photos and short videos.
Having a son and family living in a different country, I found short video clips much better than trying to have a video call. I could watch the videos again and again, if I wanted, whereas with live calls, children were cranky or crying often!
Have any of you got all electric cars? Pros and cons please.
Angela Rayner lashes out and calls Sunak “pint sized loser”.