Normally, a credit card company will certainly examine an account once or twice a year as well as give you a credit limit increase based upon your payment background.
If they haven’t, look at your payment background. If you have actually missed repayments or paid late. They most likely won’t instantly increase your credit limit.
If you have been late one or two times on paying your unsecured credit cards for bad credit. Call them as well as state your case. If it’s more than that, wait until you have at LEAST 6 months of on-time payments.