We've been working on upgrading our systems to get visibility on the resource usage by our customers on the cloud. 

Until we developed this system, and we were in a position to offer you total visibility into how your users are using the storage and enable you with tools to control the usage (quota) we didn't want to come back to you with a bill. 

Now, this system is ready and we've been approaching our customers in batches to enable us to answer all their queries and get them regularised.