[Closed] amazon phoning re fake account set up?????????

just had amazon?? phone me to let me know that a fake account has been set up and £1300 spent on it and they want to electronically send me a form to my phone for me to calrrify its not me and that I want the payment cancelled and refunded. Nothing gone from bank accoun, can;t tell visa account. I am infomred by them that they have to do a pre authorisation on teh payments and tehn a refund will be given. I asked them which name of bank or visa card it was on, but beause of multintional law they don;t have this. Its a little fishy but quite conviincing, anyone in the know had this type of call, or infact let me knowit is correect. I assume it is something they want to send to my phone as some sort of scam???