Agreed a DD for the length of my contract £81) and after a couple of months they put it up to £117, without telling me. I always pay my bills on time and energy contracts are always balanced at the end of each year, but at BG they want to take more and perhaps give a rebate at the end of the year, thus having used my money all year. Using the app and on their website, they don't even have my contract length correct. Contacting 'Customer Support' is virtually impossible. Any communication is always one-way. Live Chats are slow and useless. Get the email address and responses are little or none - Totally useless! Calling them is a forlorn hope