First and foremost welcome to our forum. We're a kind community that care your problems.
As to answer your question.
I've found the best LIVE chat support I've used for WordPress is something called Zopim. You're able to configure your chat window to suite your website and you can also have instant messaging to skype and google chat. From experience Google chat worked better.
Other providers charge for this kind of service. Their support is also phenominal. There is both a free and premium version. I've tried dozens of instant chat services and Zopim is hands down the best for me and my business.
Let me know if you have any issues. Somebody else on the forum might be able to give a different outlook on the matter. Wishing you the very best of luck.