PLEASE I NEED URGENT HELP ON BTC SENT TO OKEX.COM.
 I mistakenly sent btc to this MBTC wallet address 33iHwiDoPgyVijRSaaE7Sf4N6CfXTj3ugZ and it reflected as mbtc. Please how do I send it back to my btc wallet?

After the above error, I sent another $1020 to this BTC wallet: 3Lj8KWcaHGymYjaBSo3LuCgKjQWruCW1yQ . It got confirmed on blockchain but did not reflect in my Okex account balance. Please help me out.
Thanks.