Naaptol.com — Blackberry 8830 doesn't work except voice call

I ordered a 8830 blackberry mobile phone on telephone via an ad placed by NAAPTOL in the Times of India. The phone arrived on the 17th AUGUST 2011 and was paid by Cash on Delivery.
On checking the phone and attempting to use it for Blackberry Services, I was unable to activate it. My service provider Vodafone, informed me that the phone has a problem, it is either defected, blocked or not registered and unusable in India.
I called back Naaptol Customer Service, but they said to courier back the phone and it would be replaced, and no refund would be given. On researching this, all the people who have sent their phones, have NOT RECEIVED A REPLACEMENT and have also been asked for additional amounts of money to send the same handset back.
I have not sent them back the handset, as i am afraid of not only losing the money i have spent on a useless device, but also losing the device since they will not send back without extra charge.
Naaptol's CEO Manu Agarwal was interviewed on Business News channels like CNBC, Bloomberg - instead he should be arrested by the C.B.I for openly running a fraudulent company and cheating poor hardworking Indians of their hard earned money. SHAME ON OUR GOVERNMENT FOR LETTING A CRIMINAL LIKE HIM WALK FREE!