Microsoft has sent emails to Bing Rewards members in India stating it will shut down the program in that country after September 30. Microsoft started offering the program in India, which let users earn credits by using the Bing search site in exchange for e-gift cards, only a few months ago in mid-March.
The emails, as sent to Windows Central readers, said simply that after September 30, Bing Rewards members will no longer be able to claim or redeem credits. Recently, Bing Rewards subscribers in the U.S. were notified that the program was expanding and changing its name to Microsoft Rewards sometime in the next few weeks. However, the emails send to India's Bing Rewards members did not indicate any such change in the program, so it appears that Microsoft is simply ending the program in that country.
Thanks to sundawn, prajwalnn96, and shmsnh for the tips!