Email demanding payment

I received an email this morning stating I owed a settlement amount. I have gone through previous saved emails and do not show a loan with this company. I noticed that they are saying it's from attorneygeneral@gmail.com. I emailed them back asking for a copy of the signed loan paperwork and also advised that attorney fenerals do not use gmail accounts to handle business. We will see what happens. I have already reported one to the CFPB and will have to reportthis one as well. She is telling me I have a 12 hour deadline. This is craziness!