MUFG Union Bank Customer Service Phone Numbers Customer Service: 1-800-298-6466, 1-800-898-6466 Get information about existing accounts: 1-800-238-4486 Apply for a new account: 1-888-818-6060 Debit and ATM cards: 1-800-453-1573 Credit Cards: 1-888-642-3311 To apply for a new
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