Wrong Address. Didn't even know Vista was billing me from Childrens. Didn't even know they were the x-ray provider. They are in league with Revenue Recovery which submitted it to my credit report. It was not good enough to hit my credit so they hit it itemized. I paid it immediately but they did not remove it from my report so now it looks like I have 4 unpaid bills. If you go to Childrens ask to get your x-rays elsewhere if you can.