This is a medical bill that I received.I fell at XXXX and got injured they are responsible for the bill not me.i received a letter in the mail today from transworld systems inc XXXX/XXXX/2015 stating that if I do n't pay bill in full they will report to the credit bureaus.i tried contacting the number they provided it rings XXXX times then the line remains open with no one on the other end to speak with