I've namechanged in case of being recognised, though I suspect she's not a mumsnetter. DH has large CSA arrears which have been disputed for years as basically neither his ex nor the CSA made any effort to contact him for payment. He and ex had an ad hoc private arrangement during this time. Her relationship with DH has become somewhat acrimonious over the years.
Anyhow, both DCs are now grown up. CSA has handed arrears debt over to the ex, who had previously indicated she wouldn't pursue it once children had left home. Now she's decided she wants the lot and is asking for more money per month than she received through the CSA for the last 3 years. I'm interested in what other people make of this? It doesn't seem right to me, especially since she could have had (some) of the money at the time if she'd bothered to pursue it - she knew where DH was.