In the first instance you should contact the Child Support Agency and take advantage of the appropriate actions they have in place for the collection of child support, including arrears of child support. It is important that you contact the Child Support Agency promptly as there may be time limits in relation to which arrears they are able to collect for you.
You should contact the Child Support Agency and complete the appropriate documentation relevant to the circumstances of your disagreement to the Child Support Assessment.
Because child support and the time a child spends with a parent are not the same issue you cannot stop sending children to see their parent simply because you have not been receiving the child support you are supposed to receive. If you were to stop sending the children to a parent and a Contravention Application was filed in the court against you the court would form a very poor view of you in relation to this action.
If you are not receiving the child support you are entitled to receive you should contact the Child Support Agency and follow the appropriate channels to ensure you receive that child support and any arrears owing.
In the first instance you should approach the Child Support Agency with a view to having them stop the Child Support Assessment. Sometimes the Child Support Agency will not stop collecting Child Support from you. In that situation it is likely that you will need to commence a court proceeding seeking a stay of the Child Support Assessment and an Order for DNA testing to occur.
Whether or not you will be entitled to a refund of the Child Support which has been paid will depend on the circumstances of your particular matter.
Child Support and the time a parent spends with their kids are two separate issues. Whilst the court can, when determining the arrangements to be made for children, consider whether or not child support is being paid it is not the most significant factor considered in deciding when and how much time a child will spend with each of the parents. What is in the best interests of the children is the most significant factor in deciding whether or not you will be able to see your children and how often and how long.