Air N Water - poor product and customer service

I purchased the water and ice dispenser. After the warranty period I notified Air N Water the product only dispenses 1 Liter of water at a time which is not part of the product description. I paid to have the unit returned. They shipped a new unit. This unit does the same thing. I requested shipping labels to return the product and get a refund. They refuse to send shipping labels and state they will only ship yet another unit but will not comment if it should dispense more than 1 liter at a time. They no longer respond to emails.