Last week I started the wonderful process of trying to get a replacement for my M9. It was not that bad Momcozy really took care of me. My pumps were losing suction and I was getting an alert that my container was overflowing except that it was not full at all. I emailed to customer service line and by the end of the week I had a replacement at my house. I even messaged explaining I have been losing my milk and wanted to see if they could expedite the shipping and I got it the very next day. Thank you Momcozy for giving me another reason to love this company. 