The scammers will tell potential victims that they have a fraudulent purchase on their account and that the DEA (Drug Enforcement Agency) is now investigating them as well, but not to worry because they (Amazon) will take care of that.
Most all scams are being perpetrated by very sophisticated organized criminal organizations and are nearly impossible to track. Once your money is gone there is little to no chance that any prosecution will take place or that you will recover any of your stolen money? Most of these scams originate in India, Africa and assorted Asian countries but there have been some originating from the U.S.
If anyone calls you claiming to need any form of payment via cash card, bank account or credit card information you are encouraged to hang up and notify your local Law Enforcement Agency.
Remember that the IRS or any legitimate Law Enforcement Agency will not ask for payment on the phone via cash cards, credit card or bank account information.