Debt Collectors are in the business of recovering debt that's owed on overdue accounts. They are the ones who will go to the debtor's place of business and attempt to get their money back. So, if you received a bill and the due date has passed, you could get contacted by a debt collector.If a debt collector has sent you an invoice and you are not sure whether you owe them the amount they are asking for, the best way to find out the answer is to contact them.Debts can't be taken lightly and should always be dealt with in a timely fashion. But sometimes we can become overwhelmed with so many debt calls coming in that we can't handle them. What companies like debt collectors do is collect on debts that have been neglected.