DTDC India — After service not received tab

Address:

Nalanda, Bihar

Penta tab model no.ws802c we sent for servicing dated 18.01.2013 in DTDC Couriear,because this model is not work in properway. we talk to custmercare they speak to say your model no. ws802c dispatch in 2feb2013 for speed post service. speed post service no.EU[protected]IN. but in this date 18.06.2013 we not received my tab....
we contact indiapost office for further information but they say this product not recieved in india post office and speed post no is not found in track.
so please kindly to solve in this condition...now we are fight against in your company in consumer form....
with regards.
birendra kumar Permanat Complaine no- PENOFFO0017138