exceeded storage

Hi there, 

I am getting notifications that my zoom pro account, which includes 6 accounts in total, has exceeded the allowed limit.

Usually they email refer to about 0.3-0.5 GB additional storage space. I do delete the videos frequently and within a day after I receive the notification. 

My question is do I get charged for this?

If so, how can I control not to exceed the storage limit when the notification is sent after my storage is full?

Thank you,

Vicky