Green Star Energy

Would rate as zero if I could. I closed my account, which was in credit due to Green Star over-charging me, 7 weeks ago and was told that I would receive a refund within 3-4 weeks. No refund appeared. I followed up and kept getting a standard customer response thanking me for my patience! I kept going back and was told I'd get a refund within 6-8 weeks. I went back to them again a few weeks later and was told this had never been actioned and they had 'raised a complaint' about that. A further week later and there is still no action. This company is very easy to join but very difficult to leave - it's outrageous that they hold onto your money for months after you've been a customer and it is taking an inordinate amount of my time to resolve. AVOID!