DH pays maintenance at the CMS rate on time every month by bank transfer. Paid on 1st Sept as usual for maintenance to cover 1st to 30th Sept.
ExW has called CMS to apply through them (because she thinks his pay has gone up, it's actually slightly reduced!) and now he has to pay through them, starting 7th September, even though he already paid her directly for this month. Apparently there's nothing they can do about it.
Is this right?? How is it fair that DH pays a not insignificant sum and then has to pay 3 weeks worth again??