Same sort of case "Almost happened" with many of us at NIIT Pune. I tried to call them more than 20 times one week in advance, than only they picked the phone. When i told i want to write SCJP 5 on 29th, lady told me to come at 3:30 PM. I went there at 2:30 and saw a big queue just waiting to write the exam since morning. Then there was power cut for a long and then one batch from NIIT Sangli came which was prefered over us and we were told that there timing slot was reserved one month before. Why the hell we were given the same time slot then???
I thought of taking the first slot of 30th morning. Last day of voucher. That guy told me around 250+ are coming tommorow to write the exam. By luck, we were given another prometric address by one Nitin from NIIT and he arranged every thing. Lucky i was to escape from that situation and write the exam at a peaceful place in Magarpatta.
phew...what a day...Never knew so many people are dying to just write the exam ..
And that too on last 2 days of expiry.....

IT People rocks man....