Energy companies have been warned against increasing direct debit to people who have actually cut their usage
There do seem to be constant articles in the press showing people who have had their DD raised in spite of using less than the previous DD paid for, including allowances for winter usage and all that
Does provoke suspicion that some energy companies want to put some money in their bank rather than their customer's
Does seem the way of most companies, but you can do a flexible DD and only pay for what you use....and the unit rate is still the same. Therefore you never accrue credit to sit in their banks.