how I know who's scammer & who's not 
The best way is to DIY.
- Go to igot's website
- Open up an account with them
- Get your bitcoin wallet address
- Deposit 1 BTC or more or whatever amount you want
- Then try to withdraw the same back to your bank account
Within a week (maximum) you will understand who are the scammers.
Then come back to this forum and post your experience to help others beware of the scammers
Very Easy ....
thinks you are scammed by igot.can you please share your real experience on igot.as your comment seems you have been scammed by igot.is their service are no good?