You & your sales team are getting leads from WhatsApp, Email, Facebook, how do you push all these leads into a single repository and database to be managed?
Using Bitrix email to leads capability, setup the Bitrix email into your phone. Then forward the leads you are getting from email, messages, whatapp into the email for the leads to be created in Bitrix.
Get all your sales team to do the same, then you have all leads registered in a single place.
Setup your website & your e-commerce portal with Bitrix web form so that all inquiry from your website goes into Bitrix leads.
Setup Facebook or Intagram integration to Bitrix so that every messages sent from Facebook and Instragram are created as leads in Bitrix