Aircel — refund for recharge vouchers

Address:

612001

Hi,
I'm a retailer and I'm aware that Aircel shut down. But this is to recover the money which in form o[censored]nsold recharge vouchers.I'm having Rs.500 worth recharge vouchers. Kindly take it back and provide refund for the same. Distributor refused to take it back. Or at least guide me how to encash it. Will try to do from my end like if there is any distributor associated with this process.

Thanks