Talked to Binance representative on WhatsApp? Can someone pls guide if Binance reps talk on WhatsApp?

We placed an order to sell 500 USDT.
Someone came to the order and said that I have sent the amount to your account, please release the USDT to me.
But the amount has not arrived in my account.
I waited, the buyer filed a complaint.
Then canceled it and filed a complaint again.
But the amount has not arrived in my account.
Then I filed a complaint.
I spoke with a Binance representative.
We talked on WhatsApp, and the representative said to cancel the complaint, so I canceled the complaint.
The representative says you should release the USDT and you will receive the amount, but when the dollars were released, the representative said that due to taking more time and filing the complaint three times, your amount is frozen. I will give you a wallet address.
Now you should release 500 USDT one more time, then you will receive a total amount of 1000 USDT in your account. Now I am not sure what to do.