Have you tried Eagle Teleconferencing yet? What are you waiting for? Not only do they have non stop costumer help with operators there 24/7 but, there service is AWESOME! I currently use their audio conferencing and I love it. I can have as many participants on a call as I need. All of their conference lines have great features and benefits for me to take advantage of. I am very lucky that I have found and audio conferencing company that really works! If you haven't tried it you need to call them today!