I still have videos on Youtube I can't get off. This was after Google bought Youtube, and couldn't leave their medling hands(if it works--leave it alone?) off

I still have videos on Youtube I can't get off. This was after Google bought Youtube, and couldn't leave their medling hands(if it works--leave it alone?) off a good site. Yea, I changed accounts. Yea, I tried to do what others, and Youtube suggested, but there was an error somewhere; and I have Youtube videos I can't get to unless I comment on my video--which I disabled originally. One video got enough hits that Google put up advertising on it? I emailed Google and the person emailed me back, "Check the Tips on the Youtube help board?"