How to deal with an alcoholic sibling?

My brother is an alcoholic but he refuses to get help. He dropped out of college, lost many jobs, and might get a divorce after less than a year of marriage because of his drinking problems. My parents and I tried everything but he refuses to go to rehab or see a therapist. I received many phone calls in the middle of the night from hospitals for the past years telling me that he injured himself while drunk. I'm sick and tired of living in terror, waiting for the next phone call telling me that something is wrong with him. My parents and I went into debt to pay all his hospital bills, and paying his rent, etc. Every time he promises he'll get better, but he never does. What would you do if you were in my situation?

How to deal with an alcoholic sibling?
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