Raise a CSE and if there is any document or letter of explanation you have provision of option of uploading and sending via this webform :https://secure.cic.gc.ca/enquiries-renseignements/canada-case-cas-eng.aspx. if the request letter came via mail is it a do not reply mail if not you can also send through there.But mean while explore the webform option.My thought though
Thanks Dannio..it came as a request letter in my cic account. I have the e-medical sheet which I have already uploaded while submitting application, if there is an option to upload then I can write LOE and upload. Will explore the web form. Thanks again.