Answer:
You forgot to pay the cable bill.
Step-by-step explanation:
Credit score is a tool that aggregates your entire credit history. This is to signal the market whether you are a good payer or not. For each time you use more credit and pay on time, the higher your score tends to be. However, when you forget to pay a bill or a loan installment, your score is negatively affected. Companies will not know it was an oversight, their interpretation will be that you were unable to pay the bill and tend to be a bad payer. That's why it's important to keep reminders of your accounts expiring to avoid this kind of situation.