Storage Accounts - High Standard Data Transfer Out Costs across region (where no resource exists)

Question

Hello,

    We use Azure Table Storage extensively in our platform. Of late, we have been noticing surging Data Transfer Out Costs from our region (Meter Region: AU EAST), while we do not have any resources in that region. All our storage accounts and APIs (Different cloud provider) are in (South India).

After working with Azure support team, we have undertaken multiple configuration changes with no luck. Summary of changes are as below:
```1 ) Originally we might have enabled Geo-Redundant Storage (GRS) for couple of storage accounts but after that we switched back to Local Redundant Storage (LRS). It's been more then 60 days that change has occured.

2) We have ensured to enable firewall restrictions to provide acccess to specific IPs.

3)  Changed "Network Routing" from "Microsoft" to "Internet" and also "Internet" for "end points".

Please suggest any solution to  find the root cause for this cost and how to minimize the same.