Update CometChatNewCallList.swift

Author: pushpsenairekar2911

CometChatObjc/CometChatObjc/Library/UI Components/Calls/Call Logs/CometChatNewCallList.swift

@@ -219,6 +219,7 @@ public class CometChatNewCallList: UIViewController {
      [CometChatUserList Documentation](https://prodocs.cometchat.com/docs/ios-ui-screens#section-1-comet-chat-user-list)
      */
     private func refreshUsers(){
+        self.globalGroupedUsers.removeAll()
         self.sections.removeAll()
         self.users.removeAll()
         activityIndicator?.startAnimating()