I even had my client's letter with me but still the interviewer said that my case would need to go through admin processing. The note that I got after the interview says that my case has been refused under 221 (g) and it would need further admin processing. It is also written on the paper that they should be contacted if I do not hear anything in 3 months. This is not an outright rejection of visa though. The most annoying part is they are unable to say how long it would take to issue the visa. When I emailed the Consular, he/she wrote that the process takes an average of 3 months but some cases may even take longer than that even a year or more and some cases may be resolved prior to 3 months. So, it depends on your luck. At this point, I can do nothing besides waiting for this uncertainty to end. If you can't avoid coming back to Nepal now, it's better to buy an open ticket so that you won't lose money. But I wish you all the best and I hope you'll get through this without any hassles.