You don't need his consent written or otherwise, as a single mother you are their sole guardian, he still has a financial obligation towards them, even if you are overseas. Go to a maintenance court, preferable late in the afternoon so that you won't have to sit in a que for hours on end and get some advice from them as well. You also don't have to prove anything to any court, if he is threatening you with that, he has no right to do so. You are their legal guardian, it is your call, you don't need his permission.
62 mths ago