1 - VAC does not ban people for dying,bugs or anything like that. Please if you are going to start with " i got vac-banned for nothing " at least post this on the right place as facepunch has nothing to do with your VAC situation.
2 - VAC only ban after an valve employee analize the data they recieve and search for anything abnormal (aka hacks ). If they found somenthing you get banned. If not you do not get banned.
Simply as that.
Either way, contact valve to get your story and situation clear.
PS: You can also get vac banned for extreme flame,bad words,racism,abuse and the rest of the general rules.
Not true, VAC is a fully automated system. There is NO Valve employee behind it. And you dont get VAC-banned for flame, bad words, racism and so on...