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There was an Alfred Hitchcock tv show with an episode like that. A woman was in prison, and she convinced a medic that she would give him money if he helped her escape. She climbed into a coffin of someone else who died in prison, and he was to get her out before it was buried. When she woke up inside the coffin, she lit a match, only to see the medic lying there dead beside her. Presumably, they were already buried. AHHHHHHHHHHHHHHHH!!!!!!!
Not much chance of being buried alive nowadays, or if so, getting out of the grave after. Almost guaranteed they'll do an autopsy, or embalm you, and that would kill you for sure.
If an autopsy doesn't get you, the fact that almost ALL cemeteries require a cement vault for your coffin, will do it for sure. They are glued shut with an epoxy glue, and even if you wake up in the coffin, you'd never then get the lid off to get out.
My father in law spent his working life being one of the guys who delivers vaults, and plants them in the grave, so he's told me about the process. In the very few cases there's been an exhumation, they usually have to break the lid with a backhoe to get it off.