H1B, H4 Visa

I had attended the Visa interview along with my wife today and Singapore US consulate has issued me a 221g asking for additional documentation to be provided. Below are the documents asked for.

I got a pink slip with additional documentation as requested.

Now, the question is after I submit additional documentation, how many days would it take to issue the VIsa or would there be any additional documents again asked for? Please advice

They asked me to bring ALL the documentation they have requested for in as below at a time and submit it in the embassy in person

1) Complete list of Petitioner's active projects.Provide contact info for clients.

2) Petitioner's certified or notarized federal tax returns for the last three years ( 2011 &2012)

3) W-2 forms and payroll records for all people employed by the petitioner for last 2 years.

4) W-3 for 2012 and 2013.

I had to wait for almost like 1.5 hour near the interview counter as there were only 3 interviewers, my interview just lasted for 2-3 minutes . Almost all people who were interviewed before us got 221g or rejections in case of L1. Overall what I observed was , Singapore consulate is very very strict and I saw people being literally screwed and offered rejections.

Below was the conversation.

VO: Who is the employer
Me: Answered

VO: From when employer is in the business
Me: Answered

VO: How did you get to know about this job?
Me: I uploaded my resume in job sites and they had contacted me regarding an opening matching my profile.

VO: Did they contact you.
Me: Yes.

VO: Would you be working for a client ?
Me: Yes, Gave the client name.

VO: How many employees does current employer have
Me: Answered

VO: What would be your role at the client.
Me: Explained as per the petition

VO: Is it a new project?
Me: Yes, it's kind of new project

VO: What is your current salary? And how much would you be paid.
Me: Answered.

Then she said I would need additional documentation for this to be processed with out even asking for what documents I have.

I saw her writing white paper of the project as the required doc and ticking other stuff in 221g

Me: I told I have already submitted the petition cover letter at the finger printing counter , which has the project details. She looked in to the letter and said I don't see it, then I told its in the later pages. She rechecked it and marked out white paper of project required in 221g and kept ticking other options

Me: I have other documents which my employer sent like client letter
VO: She did not even bother to ask if I had any documents until I told her,then she asked me to pass all the documents and kept with her

 I passed her
1) My client letter
2) Offer letter and
3) Offer Agreement letters
4) Client agreement letter between employer and client

She did not check any other stuff in 221g and asked me to come back and attend the interview in person with all the documents they have asked for. She kept back all the documents which I provided including I797 and returned our passports.

I got a pink slip with additional documentation as requested.

Now, the question is after I submit additional documentation, how many days would it take to issue the VIsa or would there be any additional documents again asked for? Please advice on the general time lines being observed in such cases.

Awaiting your responses. This forum was very helpful for me though the result in my case was not expected.

Thanks,
Kumar..