He has arrears that he hasn't paid. Child support is payable whether or not you are seeing the child and regardless of the new partner's financial circumstances.

If your DH wanted a change of assessment about the new house and the income from the rent she is receiving, then he should have made an application at that time.

They can take everything out of your bank account. They can issue notices to anyone who owes you money. They can issue garnishee notices to your employer. All without notice to you whatsoever. And there is NOTHING you can do about it.

Lesson - pay Child Support as and when due. If you have an issue about residence arrangements/change of assessments - take action. Don't sit on your hands.

You can expect anything else that hits that account to also go to Child Support.

(You are talking to the person who is probably considered the expert in this field in her state).