Call Me Back WordPress Plugin v2.0 is the best plugin for wordpress if admin want to get call request from customer. It has responsive interface with 7 nice build-in themes. Admin can set call request box as a popup or wordpress widget system and possible to customize all options and fields dynamically. Admin will get notification via email when customer send call request and after done comminication with customer admin can set call request status also. Its compatible upto wordpres version 4.8.1.
Download from: Mega.nz