good faith laws collection lawsi owe 1300$ in med bills witch i will not contest it got sent to collections do to none payment ive called the hospatel

they were not willing to work with me they sent the bill to collections.collections told me i have to pay a minimum of 200.00 a month to satifie the collectore i can not aford that i told them i could afourd 25 a month . the collections said that was not acceptible and would take it to court for garnishment. the hospital was not willing to take a pay off when i did have the money and reduce the fee a little bit it was a 6500.00 bill 5200.00 they got paid. out of the 1300.00 100.00 is co pay. the co pay i could pay off in a month or 2 can they dimand a certain payment or do they have to take my good faith payments? as long as i continu to pay something. and what can i do with the hospital them selfs to help get things paid of or reduced a bit they did egt paid more than 90% of the bill i have three kids im trying to support but they dont see rent kids etc what can i do to work this out? i was told if they refuse payment debt is payed is this true help please