my debts

i got a letter in the mail saying i won some lottery money,well it said i was suppose to deposit it into my bank account.i did that and the lady at the bank said wait 10 days so i did and i got online to my online checking,it said that the check had cleared.right away i wrote checks and sent them off to pay off the bills for that month.then the bank said there was still a hold on the money and that they would do a fresh start plan with me and cover the checks i had wrote which they didnt.then i spoke with the lady at the bank she said go to the banks atm instead of online checking the following friday i did just that and the money was available.me and my kids went shopping,that monday i was called by the bank saying that that check didnt clear and they dont know why the atm made the mistake but now i either pay the money back or go to jail.i am a single mother of 3 and 1 on the way noone will hire me the doctor wont release me to go to work.i dont get child support of any kind so if anyone knows what i can do plz let me know