I agree with keeping it short. Just say you want to talk or something. He will be more likely to listen to it and then if he does respond, you can say what you prepared. Don't beg him to try again
hm I see, only problem is that I'm not expecting any success, the whole point is to let him know how I feel and if I just say I want to talk that will be ignored. And I don't want to call twice. If anyone cares to read a draft of what I'm planning to say that would be great

















