clivebeca - It's not that we don't believe you, but we've taken the steps which should have seen this sorted out...
... which means that there's something else wrong/it's a different advertiser. It doesn't help that I don't get those flashing ads at all.
Our policy is to get rid of these ads asap, when reported, which we have attempted to do. If you could grab the source code of an ad and send it over, then we might be able to help more directly - but I think that would be asking a bit much of you (not because you'd be incapable, but it's probably now how you want to spend an afternoon).