Need help stopping Spam comments

On two pages of my website, I have received thousands of spam comments. How can I stop these? I do not have any open comment fields and am not sure what to do.
My website is www.covitravel.com. The two pages receiving all these message can be seen by following the links below.
1. http://www.covitravel.com/?attachment_id=877
2. http://www.covitravel.com/?attachment_id=891

I can't even find these pages in my website, but know they are photos I added at one time or another.
Thank you,
LouAnn

 

Hello,

I will suggest you to use some "Anti-Spam" plugins in your website.

Here are links of some related plugins: -
1>https://wordpress.org/plugins/anti-spam/
2>https://wordpress.org/plugins/wp-spamshield/

Thanks,
Praveen

 

Praveen - thanks for getting back to me!