protected function get_phone_number_args( $order ) {
		$phone_number = wc_sanitize_phone_number( $order->get_billing_phone() );

		if ( in_array( $order->get_billing_country(), array( 'US', 'CA' ), true ) ) {
			$phone_number = ltrim( $phone_number, '+1' );
			$phone_args   = array(
				'night_phone_a' => substr( $phone_number, 0, 3 ),
				'night_phone_b' => substr( $phone_number, 3, 3 ),
				'night_phone_c' => substr( $phone_number, 6, 4 ),
			);
		} else {
			$calling_code = WC()->countries->get_country_calling_code( $order->get_billing_country() );
			$calling_code = is_array( $calling_code ) ? $calling_code[0] : $calling_code;

			if ( $calling_code ) {
				$phone_number = str_replace( $calling_code, '', preg_replace( '/^0/', '', $order->get_billing_phone() ) );
			}

			$phone_args = array(
				'night_phone_a' => $calling_code,
				'night_phone_b' => $phone_number,
			);
		}
		return $phone_args;
	}