same thing happened to me man. got that popup on my windows 10 scared me pretty bad. so i called the number. guy answered said his name was michael from microsoft support. told me my pc had a virus and he needed to install anydesk so he could fix it. thats when i got suspicious and hung up.
after that i searched online and found out it was a scam. from what i understand that popup is just a fake ad. they werent already inside my pc.
if you didnt install anything or give them access then i think your bank and private info should be fine. id still run a windows defender scan and check your bank just for peace of mind.
and i think abigail and michael were probably fake names. these scammers use common names to sound more convincing.
you did the right thing hanging up. i did the same.