I was very afraid that he asked for the deposit first and it was a risk, but really a very decent person, kind and worried about the phone remaining. That's why I took the trouble to recommend him as someone who worked for me.
At the time when I had the damaged cell phone I did not find a staff with an authorized account, I found an Indian person who just made me wait a week and nothing, but the cell phone number of the person I left (from Vietnam) on the same day I fix the problem.
Your process is correct. As you say, this is done and if you revive the phone ... the problem is just the account, and for example in my case here in Mexico, I called several places in the country and nobody had the miui account.