Approval notice undeliverble. What to do?

來源: VisitNY 於 2007-01-05 18:20:19 [] [舊帖] [給我悄悄話] 本文已被閱讀： 次 (281 bytes)
My NIW approval notice was returned to USCIS and displayed as undeliverable. I have called customer service center and the address has been updated. It has been three months and still the notice has not been resent. Called many times. What else could I do? Thanks for your advice.
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