My wife's Green Card had a mistake (they had interchanged the First and Last Names). Consequently we sent the GC along with I-90 and other documents to USCIS central office in Phoenix,AZ early in June. It is now almost seven weeks and we have not heard anything. We then took and infopass and met with USCIS official who said that they have no information about the application: and worse still, USCIS does NOT issue any Receipt for this kind of case. What do we do now? Suggestions and advice would be very helpful.