Karen,
You can try and call the S.Worker at the unit
you visited, and explain to her/him. Or maybe
ask your S. worker to contact the billing dept-
and see if they can get it cleared up for you.
I sure hate it to get billed again for anything, and
usually when it happens it takes almost a miricle
to get it straightened out-especially anything
pertaining to medical!
Hope this helps,
Anne