Trading A/C Credit limit -Inability to add money for trading for NRI

As of now, it is not possible to replenish bank account once it is exhausted during, even if you transfer fund to your Bank account on the same day of trading, it will not reflect in the Total fund available for trading. So, not able to buy scrips when any good opportunity comes as a market correction.
So I request Zerodha to make some arrangements to make possible for trading in case of fund exhaustion, for NRIs