Hi,
You can not possibly give it a timeline! It all depends on what has gone wrong and what is the actual issue.
I did this, but they made a mistake in their calculation. Days counted towards my experience were off by 20. I did not ask for any reconsideration in the decision but rather I asked for a consideration of reopening my application and counting my days again. I just sent an email the exact day I got the refusal, and pointed out that there was a mistake in the calculation. The next day they sent me an email stating that I was right and they will look into it, the same night I got my MR.
But to be fair my VO was kind enough to reconsider the decision as well.
Hi,
Thanks for the reply and sharing your experience. I'm expecting a reply the soonest.
Sometimes they do not get back to you at all. Sometimes like in my case they get back to you in 24 hours. So it all depends on how legit is the error and what exactly is going on and top of it all the VO plays a fair role in this matter as well.
All I can say is that if you feel like they can be a reconsideration, just go for it, you have nothing to lose. And after you ask for a reconsideration, if they don't get back to you, you can always follow up on it through your local MP.
Best of luck,