Disgusting customer service

I give them a zero. I have been trying to cancel my daughter's flight I booked in February since March. To say they service I have gotten via e mail is disgusting is an understatement. I have tried calling but no one answers. I have sent my details via their guest care e mail and I did get a response but when I rep**** to that because they person didn't understand what I was saying I got nothing. I am so disappointed with Mango