medicaid after adoption

SO how long should it take to get the kids names changed? it's been almost 3 months since finalization and their names are still their original oens. So the dr continues to call them by their first names because they have to bill under that name......so confusing. we've been using their new names informally since last dec when tpr occured. why oh why cant' they get the names changed? and why oh why can't they get me listed as the point of contact rather than their first foster mom they lived iwth for 5 months over three and a half years ago?"??? I asked two years ago to have my name put on and the first FM name removed....so i can't call and ask questions about MY kids coverage or anything else.... and of couse the CW and her superviser won't return my call and the state office said they can't help me.