Robbery (I assume you mean burglary) claims are sometimes regarded with suspicion by insurance companies. Errors as to dates, changed stories and conflicting facts only heighten suspicion. What the adjuster may be telling you indirectly is that something seems fishy.An amateur threatening the company with a lawsuit only makes them mad and more suspicious.If you think you are in the right, and/or the company is acting in bad faith, by all means start a lawsuit. If they conclude your claim is fraudulent, however, they'll deny it and may stop at little to defend and may also seek to have you prosecuted for insurance fraud.