Property manager withholding financial information

[Hira Y.]

My previous tenant break the lease and there was break for 20 days between  tenants. When I got the statement , rent is missing for those 20 days and property manager is charging the landlord for new leasing fees, advertisement and re-keying and the reason PM is giving is there is no fund left in the security deposit, so PM is charging the landlord. 

In the tenant agreement , during early termination PM is suppose to collect those fees(new leasing fees, advertisement and re-keying etc) when the tenant give the notice.

In the statement there is $$$ amount for security deposit transfer , and when inquire about that part PM comes back saying that this is between PM and tenant and they cant tell anything .

Can the PM withhold information about financial transactions with the tenant that include rent and security deposit from the landlord and deny rent without explanation ?

Please advise what is my best course of action?

Thank you,