I was a junior researcher and I submitted a paper to journal A. After not having any response from journal A, I submitted my paper to journal B. After some months, journal A mailed me to say that my paper was accepted.
I immediately replied to journal A saying that I wanted to withdraw my paper. They reverted within minutes that they have already published and paid x money for publishing. I insisted that I wanted to withdraw and they mailed me to pay y amount of money for withdrawal, which I paid. Then they mailed me saying that my withdrawal is complete. I have not signed any copyright form with journal A.
After a few days journal B published my paper. Now after one year, I see my name in a retraction list citing that journal A has retracted my paper due to “author’s personal concerns.”
How this can affect my career? I withdrew my paper, so how can journal A publish it without a copyright form? On the same day that they mailed me to say that my paper had been accepted, I reverted and wanted to withdraw. Can they publish it and then retarct it? What could be the consequences on me?