Scam... They say this is a collection agency collecting on past due Sprint bill from over 7 years ago. They said they will serve court papers that if I lose the case' I would owe 800 bucks... or if I settle now for $300... Before one freaks out, check your credit report and call Sprint to verify. I did both and saw that this was a scam.... They sound legit, but come on, wouldn't Sprint have sent me past due notices?