[QUOTE=Srini18;2934088]Whether Debit card can be used to buy bitcoin.
In Binance?[/QUOTE]Buy 30 USDT (because roughly 5 $ will be transaction fee when you send to ISG) using IMPS or UPI. Card option is also there, but their gateway doesn't work most of the time.
Transfer the USDT to spot wallet from funding wallet using transfer option. You can use convert option in the trade menu to convert USDT to BTC.
Then use the withdraw option to send it to the ISG address.