Visitor Visa - B2

Hi Everyone ,i have appered for interivew in May 12 for tourist visa at Delhi US embassy .VO asked few question like purpose of visit ,travel history ,job related ,no of years with present company etc and returned my and my wife's passport and asked us to report at counter no 30 and that indian lady handed over a pink letter with cross line by mentioning case no and asked us to check the status online ,when i asked her about visa she said no your visa is not approved as of now and we need 3-4 weeks time for additional processing and take decision accordingly but she has kept our passports with her .we were very disaapointed as we saw other persons getting visa and vo were telling them that they will get their passport in 2-3 workig days .We go for international holidays every year and we have already visited so many country including australia ,canada,NZ,UK,Europe but problem is my us tourist visa had got rejected 8 years ago from delhi embassy ,i had applied for busniess visa at that time ,DO anyone has similar exp .do they issue visa when they have kept our passports ,i check the status everyday but its showing under processing .