Questions like these:
https://bitcoin.stackexchange.com/questions/45945/trouble-with-kraken-exchange
should be closed and marked as off-topic. However, there is no selectable off-topic reason for questions like these. The closest one is :
"Questions seeking product or service reviews are off-topic because they tend to attract subjective, low-quality, and spam answers. On the other hand, offerings in the Bitcoin space are still evolving rapidly which often renders answers outdated quickly"
Not sure how exactly it should be phrased but there should be a selectable off topic reason that states that questions that are better directed at customer service representatives of service providers should not be posted here.