How apache2 can deny connections to a domain which is not hosted - apache

Question

I am hosting website iplocation.io on a cloud server. I found a domain https://chrissloey.com/index.php which opens my website within it.
Now from what I understand, chrissloey.com has pointed it A record to my server ip and my apache2 server is not denying connection to it and allow's to open iplocation.io website content like its own.
I want apache2 to deny connections to any other domain and only allow my own domain to server content.
Attached is apache conf file for iplocation.io
<VirtualHost *:80>
ServerAdmin email#email.com
DocumentRoot /var/www/public_html
ServerName iplocation.io
ServerAlias www.iplocation.io
ErrorLog ${APACHE_LOG_DIR}/apache-error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
<Directory /var/www/public_html>
Options FollowSymLinks MultiViews
AllowOverride All
Require all granted
</Directory>
</VirtualHost>
<IfModule mod_ssl.c>
<VirtualHost *:443>
ServerName iplocation.io
ServerAdmin email#email.com
DocumentRoot /var/www/public_html
SSLEngine on
SSLCertificateFile /path-to-csr
SSLCertificateKeyFile /path-to-key
SSLCertificateChainFile /path-to-ca
<Directory /var/www/public_html>
Options FollowSymLinks MultiViews
AllowOverride All
Require all granted
</Directory>
</VirtualHost>
</IfModule

Answer 1

Looking at the two comments I think the combination makes most sense:
Configure httpd to respond with redirect (301) to all incoming requests. This could be done on the 'root' host.
Configure a virtualhost listening to your domain only, and this one would serve your real content only.
This will work unless the other site requests your content and then integrates it into their responses. But as you said someone else simply put up a DNS A record.