Hi,
my mom recently had a surgery and the bill was coming in parts. I had already paid most of the bills, but $1700 bill was pending. I was waiting for other bills to arrive so that i can pay it all at once.

Yesterday I got  several letters like $500,$400 all totaling to about $1900. It doesnt say what is bill is about, just says I owe this much. I had never gotten any invoice from hospitals of these bills. I know i owe about $1700 but I dont know about this $1900. I called Collection agency this morning but they said they dont know. What should I do? What if I dont pay my bills? what will happen? Are  they under law to tell me where these bills are from? I dont mind paying but I dont wanna pay something I already paid for or something I am not suppose to pay.

I dont want to pay this and they send me another bill again later. I dont know when these bills will stop coming. What should I do.

Thanks