I was fully insured with XXXX XXXX XXXX when I received a bill from XXXX XXXX for lab work that was covered under my insurance. I have proof that I was under insurance at the time. I did not receive any mail about delinquency from this creditor, Advantage Group, who appears to have bought the debt. Now it is showing up on my credit report as unpaid and I want it removed. I did not owe this debt in the first place and I was not notified that it was in collection.