Should the JobCentre withdraw claims that I was abusive if they have no evidence to support it?

I know that there's one thing this Detective once told me is that "if you filed a complaint, the other party who you filed the complaint against, cannot file a complain back at you". So, if that company is filing a complain against you, it's unacceptable if you had already done so firstly. It's in the Book of Law and Ethics. Check it out if you'd like.