[Resolved]  Aakash Ubislate 7C+ — Not receive the product back

I had purchased Aakash ubislate 7c+ but due to some problem I had send back the device to amritsar office on 30th May 2013 along with it I had also send a cheque of rs.1500/- vide Cheque No.195606 dtd. 30/05/2013 SBI Bank and that cheque has been cleared from my bank account on 15/06/2013 but till today I have not receive my device back.
On 03/07/2013 I had word with Mr.Ajay Pal Singh (Executive) and Mr.Harbanpreet Singh(Technical Manager) and they commit me that within a week I'll receive my device back.
Also no one answer the call even customer care executive put the call on hold for a long hour.
Kindly resolve this problem as soon as possible.