The XXXX XXXX XXXX was billing my XXXX son rather than myself, his mother. I am the primary insurance holder and responsible party that should have been contacted to settle the balance. I was unaware of the balance owed of {$12.00} and had paid for all of my known balances. I recently received a Credit Collection bill in the mail addressed to my XXXX son and immediately called the Credit Collection XXXX and XXXX who said they had made a mistake in billing my son. They have made other billing errors before and I am filing a complaint as I am concerned that this type of mistake would affect a non-responsible party, especially XXXX who is a minor.