Posts being deleted

Horribly sorry if this is the wrong area, but I can't think of a more appropriate one unfortunately.

I was wondering, why have some of my posts been deleted? I'm of the mind that if they were breaking rules or similar, shouldn't I have received a infraction/warning/ban? If they weren't, why were they deleted?
I can't link to the posts, in fact, I'm not even sure what they said anymore, but I know they're not there anymore :<

In any case, what can I do about it? I would rather I don't get my posts deleted, especially without any sort of notification, in the future.