If there are no court orders in place at the moment then you'll just have to pay what they tell you unfortunately. If there's an existing court order that says two nights a week you can tell CMS that she is breaching the order and they are court ordered to spend two nights a week with you and send them a copy of the order. But I'm guessing you don't have an order at the moment.
Don't withold the payment or they'll just bombard you with letters about arrears and you'll end up having to pay anyway.
Don't withold the payment or they'll just bombard you with letters about arrears and you'll end up having to pay anyway.