Yep, that's the way they do it - they send you all these reassuring e-mails and then only deliver 2 out of three of your orders ... and then they ignore you when you write to complain.
Last Dec-Jan I placed five different oders with Nirvana - three arrived. Two orders ($95 total) failed to arrive - Nirvana just ignores all e-mails to them. I am disputing the charges with the credit card company now.
Nirvana appears to have a rat in the rug somewhere in their shipping department - way too many customer complaints about failed deliveries AND their customer service in handling complaints is terrible.
DO NOT USE NIRVANA - THEY WILL RIP YOU OFF.