Bitcoin to Rubles Scam: P2P Exchange Risks and Unresolved Issue

Regarding currency exchangers, many also conduct transactions through peer-to-peer (P2P) platforms, which can pose risks of scams. Recently, I exchanged Bitcoin for rubles. A few days later, I received a call from an unknown person, who turned out to be the sender of my rubles, claiming he had been deceived and confirming that he had indeed sent the money. It turned out that E-Change did not provide rubles from their own accounts but instead exchanged Bitcoin for USDT on Bybit, where they had a P2P order to find rubles for me. Subsequently, it emerged that the sender of the rubles was cheated with 'dirty' rubles by someone they found through this platform, affecting my card. I am unaware of how such issues are typically handled by exchanges, but perhaps Bestchange could assist. The sender contacts me daily, seeking justice. E-Change has not provided a solution for ten days, and I am left waiting for resolution.