Guys, How to get a guy who has ghosted you to come back?

I talked with a guy a few times and he said that he would like to meet me when i was in his city visiting family there. A few days later i confirmed my dates for the trip, and he suddenly ghosted me. How do i get him to unghost me? I only have his cell number.
Guys, How to get a guy who has ghosted you to come back?
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