No, I sent them address change request but in reply of an email they say that we have never submitted. We submitted everything again and I sent them an email confirming that everything is sent!
Have you followed all this properly?
If you would like us to make a change of address on your application, or for our office to re-send mail that you have failed to receive, you must submit your address with an originalsignature. We cannot accept this new contact information by email; this is to ensure the security of your documents and personal information.
Please send us a signed fax or a signed letter (see fax number and address below) with the following information:
your original request to change your mailing address,
the full name of applicant and original signature,
the applicant's date of birth,
the file number [letter followed by a nine-digit number],
telephone number, including area code,
fax number, including area code,
the mailing address, and
a return fax number and/or e-mail address (if available)
Please do not send any new address information by email. As we require your signature on this information, kindly note that your current mailing address stands unchanged and this email has been deleted.
Note that address changes for applications at visa offices may not be made using the online service on the CIC web site's E-Client Application Status (E-Cas) and that the change of address resulting from the future reception at this office of the information noted above will not be reflected on E-Cas. Change of address notifications for applications at visa offices must always be submitted directly to the visa office processing the application.