It took well over a month for me. You can track the status of the refund on the website you used to request the refund in the first place. I have many regrets for going this route. I should have just paid my own ETF and been done with it. At the end of the day, the vast majority of the money is in bill credits. I'm a little salty because of how horrendously they screwed up my orders so it's been... a process.