Capture incoming calls

Hello guys. Need your help. Not so long ago opened his own company. We are organizing various events. Now I plan to increase the capture of incoming calls. My partner said that it is better to seek help from specialists. I found several companies on the Internet. Help determine. Which company would you recommend me? I think to contact callgear.com/, but there is still a service www.callrail.com/. While I am thinking, without your help can not do.