Hello Kyashi, thank you for sharing this feedback on our Breastmilk Storage Bags with Pump Adapters. We're sorry to hear about your experience. Pumping directly into our Breastmilk Storage Bags is possible with any Lansinoh pump. The pump-into-bag adapters make pumping directly into the bag possible for many competitor's standard neck pumps. These brands include Ameda, Evenflo, Avent, and Medela. Although our bag adapters are compatible with many of these brand's pumps, they will not work with any of their wide-neck pumps. With regard to the situation you describe, we would not expect that from our Breastmilk Storage bags, so we would like to investigate them. Please retain your products and reach out to us directly by visiting our website. Click on the Contact Us link found under the Customer Care menu. We look forward to hearing from you and making things right.