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I had a great service regarding unlocking my S8+.
Filled the form and submitted @13:50 on 11.04.18, straight away got an email from Voda to confirm my email address.
In next less than 30 mins. @14:19 same day got next email from Voda included my NUC no. and instruction link.
But instead of using a non-Voda sim I googled and found if we dial #7465625*638*# phone will request to put the NUC code which I did and used the code provided by Voda and within a second got confirmation that phone is unlocked.
Later I confirmed using O2 sim that the phone is definitely unlocked.
I always got a good service/ experience with Voda staff from Customer care to tech.