diff --git a/products/utils.py b/products/utils.py
index c0f4c7e..1d53c49 100644
--- a/products/utils.py
+++ b/products/utils.py
@@ -144,7 +144,7 @@ def ranked_product_search(keyword, shipping_cost=None, discount=None, category=N
 
     # filter by category
     if category is not None:
-        products_qs = products_qs.filter(category=category)
+        products_qs = products_qs.filter(category__name__in=category)
 
     # filter by tags
     if tags is not None:
diff --git a/products/views.py b/products/views.py
index b824c5e..13e90ad 100644
--- a/products/views.py
+++ b/products/views.py
@@ -161,7 +161,8 @@ def product_search(request):
                 discount = False
         else:
                 discount = None
-    category = request.GET.get('category', None)
+    # category = request.GET.get('category', None)
+    category = request.query_params.getlist('category[]') or None
     tags = request.GET.get('tags', None)
     price_min = request.GET.get('price_min', None)
     price_max = request.GET.get('price_max', None)
@@ -185,7 +186,7 @@ def product_search(request):
             if tags:
                 products_qs = Product.objects.filter(tags=tags)
             if category:
-                products_qs = Product.objects.filter(category=category)
+                products_qs = Product.objects.filter(category__name__in=category)
             # serialize and list data
             serializer = ProductSerializer(products_qs, many=True)
             result_list = [dict(i) for i in serializer.data]
@@ -290,7 +291,7 @@ def purchase_email(request):
         return Response({"error": "Invalid value for product"}, status=status.HTTP_406_NOT_ACCEPTABLE)
     # check company.email
     if company.email is None:
-        return Response({"error": "Related compay has no contact email address"}, status=status.HTTP_406_NOT_ACCEPTABLE)
+        company.email = managing_user.email
     try:
         # send email to company
         company_message = render_to_string('purchase_notification_v2.html', {