<prompt> Human: A close friend of mine had to visit the ER for heat exhaustion. They stayed in the hospital bed for around 5 hours if that with an IV. After that, they were good enough to go home.They got a bill of around 4000 consisting of three different companies. Does this total seem right? What sort of help is available to either bring down the cost or pay for the bill? Edit: Forgot to add some details. They live in Texas. As far as I know, they do have health insurance, but their insurance refuses to pay the bill.  <response>: but their insurance refuses to pay the billThis seems important. Why are they refusing? 