Put screenshots, transaction IDs and other evidence if you want to accuse Bittrex here. If you are 100% sure that you sent your coin/token to the right address, just wait for them to review with the TX. >98% of these transactions are mostly done to the wrong address though. Bittrex might be right here.
Agreed. There's no way that Bittrex will steal his coin if send it to the right address.
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OP, If you have screenshot of your old wallet address where you send your funds then provide TXID of your transaction, Maybe we can make you flag bittrex on this issue. Because even though they change address, You must still get the fund if you used your old wallet address. I encounter this issue before but on BTC currency when they do maintenance right after I send my coins. The coins credited to my new wallet address.