Telesales meaning in simple words
Telesales is selling over the phone. The customer and the seller never meet. The whole sale, from the first hello to the order, happens in one or a few telephone conversations, often with a WhatsApp message or an email carrying the details in between.
It suits products that a customer can understand and decide on without a visit: insurance policies, online courses, loans and credit cards, broadband and mobile plans, software subscriptions, travel packages, health check-ups and home services. It is also how many businesses renew and upgrade existing customers, because a call is cheaper than a visit and more persuasive than a message.

