Last week we mentioned that Costco has a habit of backdating the starting date for lapsed membership renewals, which prompted Monica to write in and let us know of another issue they seem to have with billing. If you renew your executive membership with Costco but then apply for the Costco American Express card, Amex will charge you the membership fee a second time. Monica says the Amex CSR who fixed the problem told her it happens all the time.
If you let your Costco membership lapse, then 2 months later renew it, Costco will backdate it to day it lapsed instead of the day you renew. The result: your 12 month membership suddenly shrinks to 10 months for the same price. Consumer Reports notes that Costco used to backdate renewals by as much as 5 months before a recent class-action settlement.