They may try to play the "emotional support" animal nonsense but you can still deny them. 

Even then you may get denied as some municipalities don't allow it. 

I didn't hire them for marketing work, though, so I can't confirm or deny their work there.

I confronted the tenant who denied everything and tried to hide the roommate's belongings.

For example If someone denies you because you don’t know what cap rate means they probably will not be a good mentor since the purpose of this is for you to learn more information from someone claiming to be more experienced.

If there is a loss and the company finds out that they did not cancel the policy based on you givint them a fraudulent lease it could give them an out to deny the claim. 

I would probably deny and move on.

They get them lined up and collect those fees then its debt deny deny , next !!

  - I clearly was denied my right to fix the issues with the apartment as stated in Cal Civil Code 1950.5 What legal recourse do I have here?      

If you can deny the payment, you should.