Dear Liz: A few months ago, I purchased a large television from a nearby store. I was offered no interest for 12 months using the store’s credit card. The TV was stolen from the back of my pickup truck before I was able to bring it into my apartment. I called the police and filed a report. The next day I returned to the store and asked if anything could be done. They said they could only offer another television for a discounted price. I wrote to the credit company and they responded that it wasn’t up to them and any deals would have to be made with the store, which I did not return to. I have since made small payments on the loan, and will expect to pay if off in a few months with no problem. The remaining amount is just over $900. My question is, how bad would it affect my credit score if I simply decided not to pay the balance? Currently, I have a great score. My only other debt is for another television I purchased.

Answer: Failing to pay what you owe will trash your credit, because a single missed payment can knock more than 100 points off good scores. You’ll lose more points the longer the bill goes unpaid and suffer additional damage when the account is turned over for collections.

A better approach is to pay what you owe and resolve to stop borrowing to buy televisions. Instead, use a credit card that reimburses you for such losses and then pay off the balance in full by the due date.

As you’ve discovered, store cards often don’t offer this “purchase protection” that kicks in if an item is lost, damaged or stolen. Purchase protection is a free benefit that comes with higher-end credit cards and shouldn’t be confused with overpriced paid add-ons such as “credit protection.” Check your current cards to see if any offer this feature. If none of your cards do, use your good credit to get one that does and use it in the future for all large purchases.