diff --git a/erpnext/communication/doctype/call_log/call_log.py b/erpnext/communication/doctype/call_log/call_log.py
index fae649cd508..cf5c12e0dce 100644
--- a/erpnext/communication/doctype/call_log/call_log.py
+++ b/erpnext/communication/doctype/call_log/call_log.py
@@ -28,28 +28,28 @@ class CallLog(Document):
 			self.trigger_call_popup()
 
 	def trigger_call_popup(self):
-		employee_email = get_employee_email(self.to)
-		if employee_email:
-			frappe.publish_realtime('show_call_popup', self, user=employee_email)
+		employee_emails = get_employee_emails(self.to)
+		for email in employee_emails:
+			frappe.publish_realtime('show_call_popup', self, user=email)
 
 @frappe.whitelist()
 def add_call_summary(call_log, summary):
 	doc = frappe.get_doc('Call Log', call_log)
 	doc.add_comment('Comment', frappe.bold(_('Call Summary')) + '<br><br>' + summary)
 
-def get_employee_email(number):
+def get_employee_emails(number):
+	'''Returns employee's emails of employees that have passed phone number'''
 	if not number: return
-	number = number.lstrip('0')
 
-	employee = frappe.cache().hget('employee_with_number', number)
-	if employee: return employee
+	employee_emails = frappe.cache().hget('employees_with_number', number)
+	if employee_emails: return employee_emails
 
-	employees = frappe.get_all('Employee', or_filters={
-		'phone': ['like', '%{}'.format(number)],
+	employees = frappe.get_all('Employee', filters={
+		'cell_number': ['like', '%{}'.format(number.lstrip('0'))],
 		'user_id': ['!=', '']
-	}, fields=['user_id'], limit=1)
+	}, fields=['user_id'])
 
-	employee = employees[0].user_id if employees else None
-	frappe.cache().hset('employee_with_number', number, employee)
+	employee_emails = [employee.user_id for employee in employees]
+	frappe.cache().hset('employees_with_number', number, employee_emails)
 
 	return employee
\ No newline at end of file
diff --git a/erpnext/crm/doctype/utils.py b/erpnext/crm/doctype/utils.py
index 7e9a8f46883..c809469efe6 100644
--- a/erpnext/crm/doctype/utils.py
+++ b/erpnext/crm/doctype/utils.py
@@ -7,8 +7,8 @@ def get_last_interaction(contact=None, lead=None):
 
 	if not contact and not lead: return
 
-	last_communication = {}
-	last_issue = {}
+	last_communication = None
+	last_issue = None
 	if contact:
 		query_condition = ''
 		contact = frappe.get_doc('Contact', contact)
@@ -32,8 +32,8 @@ def get_last_interaction(contact=None, lead=None):
 
 	if lead:
 		last_communication = frappe.get_all('Communication', filters={
-			'reference_doctype': 'Contact',
-			'reference_name': contact,
+			'reference_doctype': 'Lead',
+			'reference_name': lead,
 			'sent_or_received': 'Received'
 		}, fields=['name', 'content'], limit=1)
 
diff --git a/erpnext/hr/doctype/employee/employee.py b/erpnext/hr/doctype/employee/employee.py
index cf418b0e8fe..67f7443efd6 100755
--- a/erpnext/hr/doctype/employee/employee.py
+++ b/erpnext/hr/doctype/employee/employee.py
@@ -76,6 +76,7 @@ class Employee(NestedSet):
 		if self.user_id:
 			self.update_user()
 			self.update_user_permissions()
+		self.reset_employee_emails_cache()
 
 	def update_user_permissions(self):
 		if not self.create_user_permission: return
@@ -214,6 +215,13 @@ class Employee(NestedSet):
 			doc.validate_employee_creation()
 			doc.db_set("employee", self.name)
 
+	def reset_employee_emails_cache(self):
+		prev_doc = self.get_doc_before_save()
+		if (self.cell_number != prev_doc.cell_number or
+			self.user_id != prev_doc.user_id):
+			frappe.cache().hdel('employees_with_number', prev_doc.cell_number)
+			frappe.cache().hdel('employees_with_number', self.cell_number)
+
 def get_timeline_data(doctype, name):
 	'''Return timeline for attendance'''
 	return dict(frappe.db.sql('''select unix_timestamp(attendance_date), count(*)
diff --git a/erpnext/public/js/call_popup/call_popup.js b/erpnext/public/js/call_popup/call_popup.js
index 847b501ea37..5278b322a4e 100644
--- a/erpnext/public/js/call_popup/call_popup.js
+++ b/erpnext/public/js/call_popup/call_popup.js
@@ -49,18 +49,19 @@ class CallPopup {
 				'fieldtype': 'Section Break',
 				'label': __('Activity'),
 				'depends_on': () => this.get_caller_name()
+			}, {
+				'fieldtype': 'Small Text',
+				'label': __('Last Issue'),
+				'fieldname': 'last_issue',
+				'read_only': true,
+				'depends_on': () => this.call_log.contact,
+				'default': `<i class="text-muted">${__('No issue has been raised by the caller.')}<i>`
 			}, {
 				'fieldtype': 'Small Text',
 				'label': __('Last Communication'),
 				'fieldname': 'last_communication',
 				'read_only': true,
 				'default': `<i class="text-muted">${__('No communication found.')}<i>`
-			}, {
-				'fieldtype': 'Small Text',
-				'label': __('Last Issue'),
-				'fieldname': 'last_issue',
-				'read_only': true,
-				'default': `<i class="text-muted">${__('No issue raised by the customer.')}<i>`
 			}, {
 				'fieldtype': 'Section Break',
 			}, {
@@ -79,13 +80,15 @@ class CallPopup {
 					}).then(() => {
 						this.close_modal();
 						frappe.show_alert({
-							message: `${__('Call Summary Saved')}
+							message: `
+								${__('Call Summary Saved')}
 								<br>
 								<a
 									class="text-small text-muted"
 									href="#Form/Call Log/${this.call_log.name}">
 									${__('View call log')}
-								</a>`,
+								</a>
+							`,
 							indicator: 'green'
 						});
 					});
@@ -163,9 +166,11 @@ class CallPopup {
 				const issue = data.last_issue;
 				const issue_field = this.dialog.get_field("last_issue");
 				issue_field.set_value(issue.subject);
-				issue_field.$wrapper.append(`<a class="text-medium" href="#List/Issue?customer=${issue.customer}">
-					${__('View all issues from {0}', [issue.customer])}
-				</a>`);
+				issue_field.$wrapper.append(`
+					<a class="text-medium" href="#List/Issue?customer=${issue.customer}">
+						${__('View all issues from {0}', [issue.customer])}
+					</a>
+				`);
 			}
 		});
 	}