The reputation stands, the user had a direct interaction with you, and even posted feedback in your thread for which I am unsure why @Hero & @Ahlwong deleted but they are far more familiar with the current marketplace rules set that I am so . However as far as the reputation goes, it is a valid one, even if it had absolutely no adverse affect on your account.
Furthermore, for future reference no idea what "Search Seeker" is as a dispute reason. In you make another dispute, please state a valid reason as to why you're disputing the reputation.
Negative vouch was deleted because it lacked evidence. A screenshot/video would need to be provided with the negative vouch, otherwise it's seen as sales trashing.