Ubislate7+ — non delivery o[censored]bislate7+

non delivery o[censored]bislate7+
i have all ready booked a UbiSlate 7+ (Upgraded Aakash) in the month of december 2011.
booking ID is "PMA4667",made payment through Cheque of Rs 2999/- (No.000002/Dt.19.03.12) by Speed post on 19/03/12 which is already encashed by Datawind Innovations Pvt. Ltd., Amritsar.almost five months has passed after made full payment to concern company they are neither responding mails nor lifting phone always unanswerable.
what is going on in delivery o[censored]bislate7+ (Aakash) i am really dis appointed and feel cheated by concern company.
i could not under stand this delay. is it purposeful?
this is really shameful on the part of such government projects in which Mr Kapil Sibbal our central Minister is involved.
if you can't complete the order in five month of time please refund my money.
electronic gadgets technology changes day by day.
this is my humble request to look in to this matter and do some thing.
awaiting your reply.
sudhir saksena