lying consultants

I reported a faulty phone 2 weeks ago and the consultants keep on promising to help but nothing is happening. I'm stuck with a new cell phone that I can't use because it is burning hot.I don't believe such a big company is unable to resolve such a small issue.I've decided to join Vodafone.I don't want anything to do with cellc after being their customer for over 6 years.I'm very disappointed and tired of begging.