telemarketing ( synonym found)
Definition of telemarketing:

(n) : the business of selling products or services by making unsolicited telephone calls to potential customers
"the newspaper started a telemarketing campaign to boost its subscriptions, by calling non-subscribers."
Definition of telemarketing:

(n) : the business of selling products or services by making unsolicited telephone calls to potential customers
"the newspaper started a telemarketing campaign to boost its subscriptions, by calling non-subscribers."
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