I was on my computer and got a message that my computer had been compromised and to call yahoo support at a number listed. This is the 2nd time they want 499. which I had already paid the first time this happened. Once I realized what had happened they said they would get the money back for me. They now took 100.00 out of my checking account, even though they were not authorized to take this. I stopped payment when I realized this is a scam. Now I am out 599. plus more, if they take it out of my checking account without authorization. Please Help.