Condo lost my emergency key - are they liable?

Gave emergency key as demanded by property management, few years after property management changed, their new system shows they have no key for my unit. When asked to verify whether it is data issue or key was lost - they refuse saying this is not their responsibility to verify anything and they have more urgent issues. And refusing to provide any trace record of key access or confirm it was lost.

Are they responsible for replacing the key as this creates immediate security concern?

Also are they liable for negligence?