I'm Furious!!!!!

Good day, My daughter was in the ER last year September and Getsavvi did agree to pay. After that I'm receiving emails from the hospital that Getsavvi has not paid the amount as yet. They kept on telling me about Doctors notes that were outstanding which I need to request from the hospital so they can pay. I did get hold of those Doctors notes and forwarded them to Getsavvi but still they haven't paid which is 4 months later. And now I have been handed over to the lawyers to collect the money. Which a collection fee is also added who will be liable for that collection fee? Which means I'm doing half of the job for them if I have to run after them to pay!!!!!!!!! Please sort it out