What is the p2p regulation for?

context:

an lively morning within the p2p market, a shopper proceeds to purchase me, it appears that evidently one thing new since he insistently asks me for my account quantity although I tell him to see it in my advert, to my mistake he despatched him my account quantity, apparently I did not copy properly and paste the final one I had on the clipboard of my telephone, an account of a consumer I had bought from earlier than, apparently, once I realized it I proceed to right it, the consumer asks me for my identify after having corrected him and I feel that Every thing solved, immediately afterwards the order is marked as paid, I verify my account and nothing got here, I proceed to request proof of cost. Exactly, he ignored what I informed him and transferred to the flawed account. Now binance help tells me that the one means for ME to get off scot-free is to get the funds back. I admit that I made the mistake of giving the quantity incorrect (which I shouldn't have achieved and I discovered from that day), however the duty lies with the consumer who buys, in its p2p laws it says not to cross money to accounts which are given by him chat, which is simply transferred to the registered account. in conclusion. Whose duty is it?