This happened to a friend that I know. The person is also an active poster on this local board. It was on Opay. You will see the notification but if you check it, you will see that the transaction failed.
At the time, it also happened to me. It has been last that I saw such transaction but it is still very possible. I do not only check notifications but I also check the transaction history as I receive another transaction.
Another thing to check into for you to be sure say the money done true true enter your Opay account without any chance of reversal na to check if that #50 way federal government the remove as tax done remove from the total amount the vendor send. Na the secret one of my friend way the guide me for this environment use tell me say na so him di do in checkmating these scammers and for incidents like the one the op share.