If you see the letters ‘DR’ on your energy bill next to your statement balance, it means your account is in debit. This probably means your direct debit payments are no longer enough to cover the amount of energy you use and you’re falling into debt to your energy supplier.
In these cases, suppliers generally suggest you up your direct debit payments in order to cover the shortfall. This will mean you need to collect a little more money from your housemates every month.