If you look at some of numerous topics with a similar subject on the first page of this category, you might see people explain that it's an automated filter that was made very aggressive as of late. If the situation persists, the rules of this category tell you what else you can try. But these being the holidays, any action from support is likely to be delayed.
I'm trying to help you. Please read my explanation and the topic it points to because it answers your question. Also, please the rules of this category and do what they recommend: contact support and post your ticket ID here.