I started with Greenstar in March this year gave my starting reading as requested a few days later they took a direct debit of 75.00 but since then I have been unable to log on to there website to give future readings just kept saying they don't recognise my details so they have been estimating the readings now my previous supplier was charging me 56.00 per month and when I left I was in credit after a plenty of phone calls which seem to be a waste of time I decided to change to another supplier but only after being with them for 3 months my bill is over 360.00 considering it was a lot more than I previously paid I disputed the bill because I live on my own in a 1 bedroom bungalow asked for a detailed bill but still no response they have taken 4 direct debits but still saying I owe them 75.00 so my advice would be avoid this company like the plague