This relates to a Shell contract transfer and at the end of that contract term. As TT stated that the next month's charge would be higher but did not quantify I put a stop on the direct debit which resulted in non payment when they tried to get money from my account They tried to impose a penalty charge ( called it an admin fee ) for late payment of monthly charge. As their monthly demands are for payment in advance , penalty charges should not be applied before the services have been supplied. They could try breach of contract but the original contract was with Shell and payment were in arrears. After protest and telephone calls and emails they deleted the penalty/admin charge. But it's all hassle and a wind up.