Worst company I have ever dealt with Wish I could give a minus 1 star review. Worst company I have ever dealt with! I have been informing Green Star energy for over 12 months that my app does not work!! I ring up all the time about this and still nothing has been done to rectify the issue. They were taking the wrong amount by direct debit from my account for months which caused me to become £700 in arrears. They also increase your direct debit without informing you. I can not wait to switch utility companies. Please please please do not use green star energy.