I am quite sure it is my account.
The receiving address is the one that needs identification :/
Does anyone know how to do a OP_return script under the transaction to notify whomever the owner of this wallet address that a mistake was made?
I am unsure how it works.
So this is no longer a scam accusation? Lock the thread. And I'm quite sure that whoever got your 13 BTC is aware of it and throwing good money after bad won't fix it.
It has not been solved, no.