contact with a request(+ infinitive: Our users have the ability to close, but not delete, their accounts. You can contact our Help Center team with a request to have your account permanently deleted from our platform.
ART Vancouver)
on request(used for saying that something will be done if someone asks for it: Evening meals are available on request. MED.on the occasion of a demand or request ⇒ application forms are available on request. Example Sentences Including 'on request': Detained at Heathrow on request of Belgian police but released after questioning. Malcolm, John WHISTLER IN THE DARK If they didn't do breakfast, it was the sort of place that would helicopter in a couple of croissants on request. Anita Anderson SUMMER OF SECRETS (2003). Collins Alexander Demidov)