Datawind Ubislate — Non Delivery o[censored]bislate Tablet after payment - Vijayaraj R Nair

Address:

Ernakulam, Kerala

I've paid online payment to ubislate on 24rth of February 2013 as per their 72 hours delivery offer and so far they have not delivered anything to me.I paid through my banks Debit card on 24 rth and 25th of February 2013 for Rs.3799 (for ubislate)& Rs.700(for ubislate keyboard case) respectively for orders PMBC45270E21 & PMF62811546C as per their link to my mail and further offer on their site. To now, Twenty three days have passed. I've emailed 6 times to now lodging my complaint along with the confirmation of payment details attached. So far they have not delivered or taken any effort for the delivery of the same. They are not even taking the phone.
My initial order for ubislate was on 2011 December 4rth online. That time their prebook offer was just to confirm your order without paying now. they will be delivering the ubislate within a months time through cash on delivery system. That time the offer amount was 2999/-. They have asked to send cheque on Feb2012 and i paid cheque on 1st week of March 2012 for Rs.2999/-(send to thier datawind office address at amritsar) so far they have not returned my cheque too.
Kindly help me out .. What has to be done?

With hopes,
Vijayaraj R Nair
[protected]
[protected]@gmail.com