there should be a decentralized customer care for bitcoin, seeing how many new people have issues, this is another problem with bitcoin, no support, besides this forum, but i'm not sure everyone know about it
Op just need to tell us what he is talking about. If it was indeed a Bitcoin transaction, he should have a copy of the message from the other user requesting money to be sent at a specific address. And then with the transaction ID we can verify what is going on.
We are the customer care