Being denied for a credit card doesn't hurt your credit score. But the hard inquiry from submitting an application can cause your score to decrease. ... Instead, the lender's inquiry into your credit history is what may have hurt your credit score.
What happens when a payment is declined?
To resolve a declined payment, you'll need to figure out why the payment was declined. Usually, this involves contacting your bank or credit card company to fix the issue.
Is it bad if your card gets declined?
If your card was declined because it's flagged for fraud, your card issuer is already acting to protect you. ... In any case, you should contact your issuer as soon as you realize (or suspect) that your card is flagged for fraud. The credit card company will likely deactivate the card and send you a new one.