Replace some WooCommerce text

funtions.php

/**
* 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 $domain the gettext domain for translation
* @return string
*/
function replace_some_woocommerce_text($translation, $text, $domain) {
        switch ($text) {
            case 'Direct bank transfer':
                $translation = 'Payme';
                break;
        }

    return $translation;
}

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