I mean, just fill out the "application form for cancellation of refugees" and mail it to IRCC, can it be cancelled? How long will it take to receive the confirmation letter?Depending on which part of Canada you are I would advise you to go to the nearest IRCC office with a physical confirmation of withdrawal for you and if any other persons on the claim because I thought my withdrawal was already received after my lawyer/consul submitted it but they didn’t get it. So I went in and submitted it by hand and asked if I could please be assisted as soon as possible . If you leaving is an urgent matter I would take those steps. After they gave me the confirmation they gave me a number as well to call wi the an address for the CBSA office . When you get there you’ll fill out another form stating your name address and if receiving any government assistance and if you own any vehicles along with your phone plan company! Keep in mind I’m not sure if it’s the same process for all of the CBSA locations but this is in Ontario.