Registered for my 2c:

It was the first time I tried vayama, because it is the cheapest on Kayak.

Booked an international flight yesterday. Six days until departure.

The first "booking confirmation" email said I will receive the "ticket confirmation" in 24 hours. The website says it may take them 48 hours to process.

23 hours had passed. No ticket confirmation yet.

Had tried to call. They have business hours like a bank.

They have put pending transaction on my card.

I know I should wait another 1 hour or 25 hours before posting this...

Five days until departure now...