You can check the status of the cashback vouchers of Rs. 400 (Rs. 50*8) on MyJio app under “My Vouchers” section.
The balance cashback of up to 100% is subject to recharges done via TPA apps/websites. i.e. up to Rs 300 cashback is offered on selective TPA wallets. This gets credited instantly and can be checked on the respective TPA wallet app/website.