I am just writing this response for people still holding unused Big bazaar - Gift cards
1. It seems that since reliance acquired Bigbazaar earlier this year - there might be a change "Smart Bazaar" store manager - would be able to help you with this - may be he can give you replacement with equivalent "smart-bazaar-Gift card" or "Credit note" [plastic debit card] for the Big bazaar GV you hold..
2. i also understood that - the seller of Bigbazaar on woohoo.in/or-other-sites is "Bigbazaar"-entity. Logically since bigbazaar is closed - the customer serive for pending cases/disputes/ complaints regarding redemption of GV's that are sold by Bigbazaar ---- all this would logically be transferred to "Reliance" support.
hope i could help ..
Thanks