cold call

Noun

 * 1) A sales call either by telephone or personal presence, made without a referral or without preparing the recipient of the call.
 * I got a cold call in the middle of dinner from someone trying to sell roofing and siding because they're allegedly working in my area this week.

Translations

 * German:, Cold Call, Kaltanruf

Verb

 * 1) To call someone without preparation or referral.