I've had a problem in that my machine stop sucking although the motor was working. Fortunately Cloud's teats have developed enough for me to be able to hand milk her but my hands don't like doing both of them. I emailed Dansha Farms on Friday evening, had a reply on Saturday morning to say they would replace the motor, another one Saturday to say that they would send the tracking number as soon as they had one. This morning I had an email with the tracking number and notification that it would be sent tomorrow. That's what I call good service.