Problems with alabama adoption and subsidy

Hi, we are adopting 2 sisters 4 and 13, we already signed up for subsidies, when we first applied we knew we would get one for 13 yo, but didn't expect one for 4 yo (we brought up 13 yo had adhd worried that 4 yo might have later), our worker called us and told us that we were approved for both, but 4 yo wouldn't get a check, she would keep medicaid (she would anyway because she gets ssa), we would get a monthly check later on if she tests positive for adhd, and dhr would pay for both adoptions, we signed papers at lawyers office and lawyer said all we would pay is filing fees. Today I took 4 yo to dr. and was told she didn't have medicaid, called medicaid office, they said it was cancelled, called worker she said that she was waiting on t numbers and would let me know them so I could continue with appts. Then worker called me back and said we wouldn't get medicaid because we were denied a subsidy on her and dhr wouldn't pay for adoption the worker denied that she called me and told me 4 yo was approved. We have had some problems recently that we think contributed, but can't prove it. A 16 yo was sent to us by her foster parents as punishment, we found out some stuff that had been going on, and child didn't want to go back, we had workers and supervisors involved in that (the foster parent was the president of our foster parent adoption asso.) then we have 3 siblings 16 mos. , 4 yo and 6 yo, 4 yo told mom that I choked her (haven't laid a hand on her, she hasn't been in trouble but 1 time when I told her to go to the corner and she went, but she is a mommas girl and she wants to go home and her mom keeps telling her she is coming to get her), our worker was involved, 2 child workers and 2 supervisors, until child told it was not true. Then we find out about subsidy and medicaid. Can dhr stop medicaid before adoption is final and leave child with no insurance? How can I find out why we were lied to about subsidy and dhr paying for adoption? Thanks sherry234