PaterAlf: Oh no, they made a mistake. And it was about something extremely important like removing games from an account (because there's no option to hide games). The whole support team should be fired. But maybe that's not enough. Let's pick up the pitchforks and torches and burn down the whole company.
That will teach them a lesson...
While the OP's issue is not really that serious, GOG Support does seem to just skim through one's initial ticket, if even that. The last refund I requested, I included all the info they ask you in my first message to them, i.e. payment method and transaction ID, and said that I wanted a refund and not store credit. Yet, in their reply they were asking me exactly for this info.
It's the same when you contact them with an issue with your account or the site, and tell them beforehand everything you've tried already, including the stuff they tell you to do, and yet they reply back telling you to do the things you've already told them that you have already tried.
So, regardless of what the OP's problem is, a little more attention to what people are saying in the tickets they submit would be appreciated, as it's something very basic actually, and would save both sides some time, and spare them reactions like the OP's.