Hello Sandy...I just read your updated message. I truly hope your experience with billers is unique as it sounds like quite the billing nightmare; from the biller's point of view it is quite astounding. The problem has to be either the billing software you are using, the billers you are using,the manner in which you are coding and/or the way your practice is setup with the insurance carriers. I can understand the billers having initial "kinks" to work out when they begin working with you, it's the ongoing issues that are difficult to understand. As a fellow user, if you would like me to look at one of your rejections to assist you in determining what the issue is,I would be happy to do so; we would just have to sign a HIPPA form. As you probably know, the insurance carriers have timely filing deadlines so the longer your issues continue the more money the provider is apt to lose.