I guess you just accidentally copy-pasted the wrong address.
Everyone can make a mistake.
No because it was two withdrawals 15min apart, and it has aggregated them itself into one. I have never deposited LTC on cryptonit, only FTC, and has the destination wallet open and painstakingly check the digits to make sure I haven't accidentally cut one off either end of the string. Also the transaction should have gone though if the destination address is valid, regardless of if it's the cryptonit deposit address, and it still hasn't.