So what means exist for consumers to seek redressal in the event of wrong doing by a corporation? Or should they just write to the relevant agency and hope that

So what means exist for consumers to seek redressal in the event of wrong doing by a corporation? Or should they just write to the relevant agency and hope that it picks it up? I know that the EU competition commission does some solid work, but judging by some of the laws passed (I mean the recent internet copyright law, and the past anti-piracy laws), it’d seem the news and media companies have got the agencies deep in their pockets.