I logged into my account and found 10000000000000vrs in my wallet. I guess it was an airdrop supported by the coinexmarket exchange, but the trading system recorded an error. I don't know how to deal with

At 15-05-2018， I have  deposited  66616.833851 vrs into coinexmarket exchang. Next, I have received a email  about  fund desposit : Your account 0xa9e3c366384c3a5cf507810f05fefc61911188ec