Ask your bank if you can add your spouse's name into your bank account.
You can also try your luck with your credit card company.
共同帳戶,共同房產，共同租房合約 are not necessary. You can use other things as the marriage evidence.
Check my post 婚姻綠卡 (2) - 手把手教你如何評估婚姻的真實性
http://blog.wenxuecity.com/blogview.php?date=201101&postID=25729
