I would just like to say that it sounds reasonable not to get carried away with paying for DV too long in advance (especially before Delbros even gets your documents).
We paid Delbros a week after we were scheduled (about 2 months prior). To add insult to injury, we paid on "Manila Day" so Robbie said they were having problems retrieving information on payments made that day. My wife sent two text messages, I sent a fax, a text message myself, and talked to Robbie twice. Suffice to say, we haven't received any confirmation yet, and beside that, our documents aren't even at the Embassy yet! So right now I'm doing all of this stressing for nothing...
I will simply wait until 2 weeks before our interview and I will have my wife send the text message again. If no luck, then I'll call Robbie. If no luck then, I will repay the doggone thing
And just a heads-up, I guess Robbie is not allowed to disclose information any longer regarding Document Verification on a case by case basis.