Total number of comments showed is wrong

Hello,
I have customized my article template to show the total number of comments after the title, but the number showed is wrong (it always shows "12 comments" -
see https://accademiainfinita.it/blog/12-coscienza/1016-la-notte-buia-dell-anima, or any other article from the blog https://accademiainfinita.it/blog

Here is the code I am using

<?php

		// call Komento comment model

		$commentsModel = KT::model('Comments');

		$commentCount = $commentsModel->getCount('com_content', $this->item->id);



	?>

<!-- Render Komento comments single article page -->

				<dd>

							<i class="fa fa-fw fa-comments-o"></i> <a href="#comments"><span class="commentCounter" data-kt-counter><?php echo $commentCount; ?> </span><?php echo JText::_('COM_KOMENTO_COMMENTS'); ?></a>

</dd>

	<!-- Render Komento comments on single article page - end -->

this code in inserted in
/templates/rt_galatea/html/layouts/joomla/content/info_block.php

which si called in
/templates/rt_galatea/html/com_content/article/default.php

I attach both files for your reference

Thank you