Before you give up on the deal, just make sure all the conditions are met. Many of these offers require you to activate them or load your wallet in a specific way first. I know the poor support is frustrating, but if this continues to happen even when you do everything correctly, then definitely stop using them and find a better app for your payments.

I haven't used AU's FDs, but they offer 7.25% interest on 12-month deposits. You'd get about ₹725 on ₹10,000, or ₹7,250 on ₹100,000. They have easy online access, different deposit lengths, and better rates for seniors, which could be good for short-term savings.