Calling customer service is often the best way to get help with deferring payments or resolving errors on your account.

Seasons change, and so do credit card terms.

It’s not uncommon for credit card issuers to tweak fees or adjust rewards and redemption options. Even so, the past year or so has brought a deluge of such changes to several marquee products.

Originally published on nerdwallet.com, part of the BLOX Digital Content Exchange.