Well, you have been triaged at the emergency room three times already, so I find it unlikely that they oversaw a life threatening emergency three different times. You have an appointment with a specialist, so you will eventually get help.

Judging by the fact that you have only been to the emergency room, you do not have a fastlege, right? So just contact 116 117 again if the symptoms get worse. And follow the advice from someone else here, of calling the neurologists practice and ask to be contacted in case someone cancels last minute.

I don't know where you are from, but maybe you are used to another standard of care, where they will do all kinds of tests and exams every time "just in case", we don't do that in public health services as there is no push to earn as much as possible on patients.