It’s highly unlikely that you’ll be imprisoned for not paying off credit card debt. You may be approached by debt collectors and even bailiffs, but you shouldn’t worry that you’re going to be sent to jail because of it.
The types of debt that are enforceable by imprisonment are limited to government debts and criminal fines, not creditor debts. In the unlikely event that one of your creditors tells you that you may be sent to prison for not paying your credit card debts, you should make a complaint against them.