If you want to gain new customers or get a larger share from the competitors, you must avoid competition and act fast.
You can send e-mail to your customers or you can call. However, no sales channel can capture the heat and efficiency of face-to-face sales.
Customers are looking for product and service providers who can connect with them quickly and easily on a personal level.
You must allocate resources to reclaim your customers who stop receiving service from you.