Received a bank transfer of 2000 from an online merchant.

You received a bank transfer from an online merchant, probably from your friend.

You can call the customer service staff of the bank to find out the source of this transfer. Just check the details of the bank card, which may require your authorization.

You can also log in to mobile banking to check the specific bill details.

It may also be your friends or family. If it is them, you may get a call from them in the future.

If there is nothing, someone may have transferred the money wrong. As educated citizens, we have an obligation to return it. I hope my answer can help you.