Extremely poor service with no response

if there was anything less than a 1 star I would have used it. I have had such terrible experience with ET since the day I booked and I am not the only one complaining. The current issue is: I have been trying to contact ET to have my ticket canceled, the local numbers (ALL) go unanswered, when I contacted the sales department out of frustration, they advised that someone would call me ( this is more than 2 weeks ago). The global contact center is answered and I was transferred from pillar to post then put on hold for over 20 mins. I contacted ET via twitter, and I was given the run around, eventually I was asked to fill in a form online which I did, I got a service ticket number which I provided their twitter account, there was nothing happening for a long time after following up severally on twitter, yet they promise to get back to you within 24 hours eventually i was contacted via email after a couple of days, with a very lackluster response. I tried to get more info and there has been no response for days again. This is just but one of the frustrations i have with ET.......just extremely poor service I am now even lost what next do I need to do to get my issue resolved