It has been proven that before the purchase, the customer touches the product at least 7 times: they see the advertisement, study the site, call you in person and the like. All this communication should be at your fingertips. You, not the customer, should remember all of his requests to make an offer that cannot be turned down. This is a seamless experience for the client. The customer comes for the product where it is convenient and wants to solve his problem quickly. And you connect all the channels of communication together, and you no longer send the customer who wrote directly to call you or create an order on the site. The cost of attracting a client is high, do not double the risk of losing it!
It is worth creating a CRM-system, where dossiers are collected for each client and with a new application to the company, sales or smm-manager will be able to quickly get all the information. And don't forget to introduce new rules of procedure for employees, so as not to transfer the request from one channel to another.