Fiat currencies (US dollars, euros, British pounds, etc.) are not currently supported as trading instruments on HitBTC. Consequently, there is no way to link your HitBTC account with your bank account.
However, you can buy coins using Visa, Mastercard, or ApplePay. This feature is provided by our partner services MoonPay, Mercuryo, and Banxa.
Just open the Buy Crypto section and follow the instructions here.