H1B, H4 Visa

I attended visa interview in Dec 1st week 2012, I got 221g because they have some doubt about Employer. They said it will take 6 to 12 months to process.
Recently I got a call from Hyderabad consulate on April 04 2013 to submit some documents. I did not get any written mail asking to submit the documents. I spoke to my Employer they said we shouldn’t submit any documents until we get any written confirmation mail asking for documents.
My employer directly sent a mail to the embassy with the information regarding the call I got.They mentioned in the mail that “ Our petitioner got a call from embassy to submit the documents , can you let me know what documents you require from us to process my petitioner visa” .We didn’t get any reply for our mail. We are waiting for the written mail from the embassy to submit the documents they require. But on 15th April 2013 I again got a call from embassy stating that “we don’t require any documents from you ,we will go on with the processing of visa. We will let you know whether your visa is approved or not .Inform your employer that we don’t require any documents”.
I am confused, why did they call first asking to submit the documents later why don’t require any documents. We are wondering why they are doing like this, will they approve my visa or not
Does any one have an idea about this kind of situation? Please let me know if any one have same experience.