While I was sleeping he made 2 BTC transactions in that binance and successfully withdraw them via P2P to his bank account. After that he asked me for a refund because his own binance account was fixed.
You did log in to the account after selling it to see activities. You should not.
2 hours ago I entered binance again, and which tells me that he has taken it out of my device and I had to re-enter and ask for a code, for me it is a very suspicious reason that he is entering the account with the aim of stealing the funds
My argument is that I can't make a refund as he already used an account (who knows for that he used it???). His arguments - 0. Once I offered him (the 4th time) to change details of the account on yours he refused.
No, you can't but you need to prove it that he used the account. He must deposited the 2 BTC. Give a screenshot of the deposit with blockchain tx ID. And also give some screenshot of the P2P trade.
If someone was depositing 2 BTC, then I have no idea for only $70 why would they care.
Not 2 BTC, sir. Just two transactions using BTC (both for $40). Here's the screenshots of his P2P deals on some Ecuador bank. I don't even know this language they're talking about in P2P chat:
This person just deleted full conversation in Telegram and showed you only the fact of payment. If you would see the full conversation you will be sure that I am not a scammer here. He used an binance account and asked for refund because he doesn't needed it anymore as he said. When I asked him a couple of times to change details on his own and take the account because he already used it - he refused. This man is just a dumb