- Added new models and request types for enhanced SIM cancellation and plan change functionalities.
- Implemented full cancellation flow with email notifications and confirmation handling.
- Introduced enhanced plan change request with Salesforce product mapping and scheduling.
- Updated UI components for better user experience during SIM management actions.
- Improved error handling and validation for cancellation and plan change requests.
- Updated address retrieval in user service to replace billing info with a dedicated address method.
- Adjusted API endpoints to use `PATCH /api/me/address` for address updates instead of billing updates.
- Enhanced documentation to reflect changes in address management processes and API usage.
- Removed deprecated types and services related to billing address handling, streamlining the codebase.