I haven't heard about a problem like this one. Do you know how that comes exactly about this money missing? Have you carefully checked your history page and/or the withdraws page to see what happened?
Waiting 17 days is not acceptable. There is a topic about Kraken
here you should try to post about your problem to speed up the process. There are 2 or 3 Kraken's representatives in, so you can get their attention