It's called GOG Galaxy.
If it's not there, you can also delete it manually and delete it's files from appdata.

As an alternative, install it again, that should create the program entry.

Try launching unins000.exe from the installation folder. That's typically C:\Program Files (x86)\GOG Galaxy I believe it refuses to install if you already have the same version.

How are you able to actually CONTACT these people? I purchased and was invoiced for SKYRIM: Anniversary Edition. They put SKYRIM: Special Edition into my account I've been charged $19.99 for a $9,99 edition. Not very happy!!!

You have no reason to contact support, as I'll explain below. But for future reference, you tell the chatbot your issue is of type "other" twice. See the bottom of my complaint post for the exact wording. Alternatively, you can try e-mailing support (at) gog (dot) com The library will always display the base game title, which in this case is Special Edition. The Anniversary Edition is the base game + Anniversary Upgrade DLC. Look at your list of files available for download and you should see the DLC installer there.