What should I ask a guy to do a video to call a guy?

I've been texting a guy who's been requesting inteads snapchat since the messenger didn't work. I requested a video call from that guy, and he couldn't. he was at the apple store i then i did ask about vidoe calls yesterdays but let me know a bit late to that his mum need help and change today at same time at 7pm. what's right or wrong.
What should I ask a guy to do a video to call a guy?
Post Opinion