On Clicking "Company Info" under "My accounts" Page (or via this link here), you will see this:
The company on whose name KYC documents must be uploaded is named in this sentence. The name of the business mentioned here will be on any checks that are written, if any. This GSTIN will appear on your invoices and receipts along with additional information like your PAN card, TAN card, and GST numbers.
The address there must correspond to the address evidence given.
The provided address will be used for all physical mail correspondence from Exotel.