EchoTopic owned us alot of money and stopped showing ads on our site wihout notice

Hi everyone, we are experiencing something very weird about EchoTopic and I have tried all the means to contact EchoTopic staffs but regardless how many emails and phone calls I sent and made, there is no reply from them.
Our site got quite high ranking and high traffic, more than 1 million page view a day. We placed EchoTopic tags for quite sometimes, I guess more or less a year and it performed pretty well on our site as an addition to Google Adsense.
The problem is since 13/8 there was no ads from EchoTopic shown up on our site and more weird thing is we have not received any check from them since May even though in their system, they said the payment for May and June were completed (as in "paid").
We have tried to contact EchoTopic so many times without any success, calling them with no hope. I […]

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