Zoho CRM creating useless leads on FB ad like

Zoho CRM creating useless leads on FB ad like

Hi all. I've been running a very simple ad on FB. Pretty basic, done from the actual social rather than from the ads manager.
Everybody who likes the actual post gets saved as a lead to zoho crm. We've only got zoho social and woztell connected to our FB, and woztell doesn't actually create leads on likes, only on comments, posts and direct messages. It must be coming from Social which is the only other connected item. What's causing this? i've looked in the settings but nothing is turned on. These leads are absolutely useless and only clog the CRM.