Spalletti has been linked with the post after leading Zenit to the Russian championship.
He insisted: "I have never been contacted by Inter. I have a contract here.
"I will continue to be Zenit's Coach until they sack me or a new situation develops.
"There were never any doubts [that Massimo Moratti would show his full confidence in Benitez].
"Moratti is a serious person. At this present moment in the season the team has paid dearly for a series of injuries.
"Moratti is not the kind of person who turns his back on you after two months."