diff --git a/TODO.md b/TODO.md
index 951032e7..740223b6 100644
--- a/TODO.md
+++ b/TODO.md
@@ -434,3 +434,20 @@ serailzer self.instance on create.
 * backendLog store method and language... and use it for display_script with correct lexer
 
 # process monitor data to represent state, or maybe create new resource datas when period expires?
+
+
+# Automatically mark as paid transactions with 0 or prevent its creation?
+
+# Confirmation steps on amend and other billing actions
+
+
+@register.filter
+def comma(value):
+    value = str(value)
+    if '.' in value:
+        left, right = str(value).split('.')
+        return ','.join((left, right))
+    return value
+
+
+# Close, send + download admin action for bills (with confirmation)
diff --git a/orchestra/contrib/bills/admin.py b/orchestra/contrib/bills/admin.py
index 10301e09..67d10c02 100644
--- a/orchestra/contrib/bills/admin.py
+++ b/orchestra/contrib/bills/admin.py
@@ -195,8 +195,8 @@ class BillAdmin(AccountAdminMixin, ExtendedModelAdmin):
     change_list_template = 'admin/bills/change_list.html'
     fieldsets = (
         (None, {
-            'fields': ('number', 'type', 'amend_of_link', 'account_link', 'display_total',
-                       'display_payment_state', 'is_sent', 'due_on', 'comments'),
+            'fields': ['number', 'type', 'amend_of_link', 'account_link', 'display_total',
+                       'display_payment_state', 'is_sent', 'due_on', 'comments'],
         }),
         (_("Raw"), {
             'classes': ('collapse',),
@@ -213,13 +213,23 @@ class BillAdmin(AccountAdminMixin, ExtendedModelAdmin):
         actions.manage_lines, actions.download_bills, actions.close_bills, actions.send_bills,
         actions.amend_bills, actions.report
     ]
-    change_readonly_fields = ('account_link', 'type', 'is_open', 'amend_of_link')
+    change_readonly_fields = ('account_link', 'type', 'is_open', 'amend_of_link', 'amend_links')
     readonly_fields = ('number', 'display_total', 'is_sent', 'display_payment_state')
     inlines = [BillLineInline, ClosedBillLineInline]
+    date_hierarchy = 'closed_on'
     
     created_on_display = admin_date('created_on', short_description=_("Created"))
     amend_of_link = admin_link('amend_of')
     
+    def amend_links(self, bill):
+        links = []
+        for amend in bill.amends.all():
+            url = reverse('admin:bills_bill_change', args=(amend.id,))
+            links.append('<a href="{url}">{num}</a>'.format(url=url, num=amend.number))
+        return '<br>'.join(links)
+    amend_links.short_description = _("Amends")
+    amend_links.allow_tags = True
+    
     def num_lines(self, bill):
         return bill.lines__count
     num_lines.admin_order_field = 'lines__count'
@@ -279,9 +289,11 @@ class BillAdmin(AccountAdminMixin, ExtendedModelAdmin):
     def get_fieldsets(self, request, obj=None):
         fieldsets = super(BillAdmin, self).get_fieldsets(request, obj)
         if obj:
-#            if obj.amend_of_id:
-#                fieldsets = list(fieldsets)
-#                fieldsets[0][1]['fields'] = fieldsets[0][1]['fields'] + ('amend_of_link',)
+            # Switches between amend_of_link and amend_links fields
+            if obj.amend_of_id:
+                fieldsets[0][1]['fields'][2] = 'amend_of_link'
+            else:
+                fieldsets[0][1]['fields'][2] = 'amend_links'
             if obj.is_open:
                 fieldsets = (fieldsets[0],)
         return fieldsets
diff --git a/orchestra/contrib/bills/filters.py b/orchestra/contrib/bills/filters.py
index dae95794..cd706656 100644
--- a/orchestra/contrib/bills/filters.py
+++ b/orchestra/contrib/bills/filters.py
@@ -20,10 +20,10 @@ class BillTypeListFilter(SimpleListFilter):
         return (
             ('bill', _("All")),
             ('invoice', _("Invoice")),
-            ('amendmentinvoice', _("Amendment invoice")),
             ('fee', _("Fee")),
-            ('amendmentfee', _("Amendment fee")),
             ('proforma', _("Pro-forma")),
+            ('amendmentfee', _("Amendment fee")),
+            ('amendmentinvoice', _("Amendment invoice")),
         )
     
     def queryset(self, request, queryset):
@@ -152,4 +152,3 @@ class AmendedListFilter(SimpleListFilter):
             return queryset.filter(id__in=amended_ids)
         else:
             return queryset.exclude(id__in=amended_ids)
-
diff --git a/orchestra/contrib/bills/templates/admin/bills/report.html b/orchestra/contrib/bills/templates/admin/bills/report.html
index 7cb63a83..61d74426 100644
--- a/orchestra/contrib/bills/templates/admin/bills/report.html
+++ b/orchestra/contrib/bills/templates/admin/bills/report.html
@@ -49,9 +49,9 @@
     <td class="item column-billcontant">{{ bill.buyer.get_name }}</td>
     <td class="item column-date">{{ bill.closed_on|date }}</td>
     {% with base=bill.compute_base total=bill.compute_total %}
-    <td class="item column-base">{{ base }} &{{ currency }};</td>
-    <td class="item column-vat">{{ total|sub:base }} &{{ currency }};</td>
-    <td class="item column-total">{{ total }} &{{ currency }};</td>
+    <td class="item column-base">{{ base }}</td>
+    <td class="item column-vat">{{ total|sub:base }}</td>
+    <td class="item column-total">{{ total }}</td>
     {% endwith %}
 </tr>
 {% endfor %}
diff --git a/orchestra/contrib/payments/models.py b/orchestra/contrib/payments/models.py
index dc012d5a..9a89303d 100644
--- a/orchestra/contrib/payments/models.py
+++ b/orchestra/contrib/payments/models.py
@@ -144,7 +144,6 @@ class Transaction(models.Model):
         self.save(update_fields=['state', 'modified_at'])
     
     def mark_as_rejected(self):
-        self.check_state(self.EXECUTED)
         self.state = self.REJECTED
         self.save(update_fields=['state', 'modified_at'])