Just realized (via copilot app) that my husband and I have both been charged for Amazon prime. We are not alone:
https://www.reddit.com/r/amazonprime/s/NsYewCMIrO
After much chatting and calling Amazon, they refunded me 12 months worth of the charges.
Feel free to call us stupid, but with dozens of Amazon charges a year, it's hard to see a monthly $14.99 charge. Anyway, maybe this will help someone on here.