Change Label for field used in Woo Commerce

I’m using WooCommerce, and using a BACS Payment method which is actually Bank Trasnfer. The fields account details are fine, but for Indian context.. i need to change following two fields labels to something else. For example:

Change IBAN label to MICR Code, and
BIC to IFSC.

And also need to disable Sort Code.

However, please note that I don’t to make chanegs into plugin’s code itself. So looking for some function that can help change the label from my theme function file.

Any help is appreciated.

It gets its label using a localisation call, __('IBAN', 'woocommerce'), so you could always just intercept that and change the text:

/**
* filter translations, to replace some WooCommerce text with our own
* @param string $translation the translated text
* @param string $text the text before translation
* @param string $domain the gettext domain for translation
* @return string
*/
function wpse_77783_woo_bacs_ibn($translation, $text, $domain) {
    if ($domain == 'woocommerce') {
        switch ($text) {
            case 'IBAN':
                $translation = 'MICR';
                break;

            case 'BIC':
                $translation = 'IFSC';
                break;
        }
    }

    return $translation;
}

add_filter('gettext', 'wpse_77783_woo_bacs_ibn', 10, 3);