Salesperson making unsolicited phone contact

COLDCALLER

This person dials strangers hoping to pitch a product without any prior invitation.

A "cold caller" is someone who contacts potential customers by phone without prior request, often to sell products or services. The clue plays on the literal meaning—"unsolicited phone contact" directly describes the act of cold calling. The answer combines "cold" (unprompted) and "caller" (the person making the phone call) to form a common sales term. No hidden wordplay here, just a straightforward definition.