Groupon Product Designer interview questions

After two attempts at nailing down a time, both of which the interviewer was a no call, I went in to this iffy, and when my phone rang 15 minutes late, I wasn't feeling good about this. Talking to a Senior Designer there for a phone screen, I realized that if all their designers were like this, I would not want to work for a company such as Groupon. During our discussion, while explaining a couple products I've worked on, they went on to mock the service, even saying it was funny that users would even want to use this. I found it every unprofessional, and never have I talked to someone that did that, at any level in my career.