I got my interview invitation from that email. And then I replied I didn't get any response. Did you email them in a new email chain?Well, if you do you will receive an auto response as below:
THIS IS AN AUTOMATIC REPLY
You have reached the Scarborough Citizenship Ceremony inbox.
If you submitted your signed oath form, this is your confirmation of receipt.
If your email is related to anything other than the Ceremonies or citizenship certificates please contact our Client Support Centre at 1-888-242-2100 (in Canada only) OR use the online Web form (https://www.cic.gc.ca/english/contacts/web-form.asp). You will not receive a response to your enquiry via this email.
All enquiries are processed within two business days.
Scarborough IRCC Team