if (e instanceof RuntimeException && e.getLocalizedMessage() != null &&
                    !e.getLocalizedMessage().isEmpty() && e.getLocalizedMessage().length() <= 3) {
    int code = Integer.parseInt(e.getLocalizedMessage());
    if (code == ResponseStatus.SC_FORBIDDEN) {
        view.onForbidden();
    } else {
        handleError(); // Abstract method to be implemented on child class
        view.showErrorPhoneNumber(ErrorHandler.getErrorMessage(e)); // Put this on handleError() on child class
    }
} else {
    handleError(); // Abstract method to be implemented on child class
    view.showErrorPhoneNumber(ErrorHandler.getErrorMessage(e)); // Put this on handleError() on child class
}