Form 956

Hi eddie, Its been 220 days sice I have lodged visa and now I have lost faith on my consultants as they amde some mistake in my visa application. So, kindly confirm that If i upload form 956 (withdrawing of authorized recipient) and change the email address (i.e. I will receive the further correspondence from DIBP), will it affetct on visa processing time?
I would suggest to call 1300 364 613 and asked what is going on?

Form 956 is used when you are appointing or withdrawing a registered migration agent, legal practitioner or exempt person to provide you with immigration assistance and to be your authorized recipient.

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