Pittcity Thank you!
Vodafone has different rules here; nothing is for free.
A lady in our Zoom IT class has a similar problem; she was asked to come up with $x which she found out later was simply to confirm her device was suitable and then $y to unlock.
She confused me there as to who she dealt with; obviously not her service provider who wouldn't have needed to charge her the $x.
My lot want money too, which goes against the grain.
Google has found "simneverlock.com" which appears to be free, but you never can tell! Worth a go!