Unacceptable service!

One month after purchasing a Nutribullet through Yuppuchef the machine stopped working, I sent it back for repairs and when I got it back it worked again for a couple weeks and stopped working again. I returned it again and told them I don’t want it repaired I want a new one or I want a refund so I can purchase a new one elsewhere. Six months later and I’m still waiting! After numerous emails to them they finally responded to say my repair will be returned which never happens and I keep telling them I want a new one or a refund. This is shocking service by a company that I thought very highly about.