Why my account has 66,08 US$ now and yesterday has 81US$ ???

maybe you havent that much clicks

 

Ask the customer service they will provide you the solution.

 

My adsense was also showing 20$ less few days ago. But it is showing the correct amount now.

 

It turns out it was a glitch. The reporting for me is showing the correct earnings now for earnings since last payment.

 

if they want to take your money they do it

 

There is very little that people can do in this regard as everything with respect to adsense is controlled by google only. Maybe it must have been their decision to earn some bucks at your expense. They are used to doing it. After all it increases their profit margins.

 

its happen just because of click fraud . their stupid policies contact with customer care...