I received a settlement offer a few months ago from a CA for an old Capital One Account. I toke there offer and paid it according to terms of the offer. About 2 months later capital one updated my credit report to say PAID/SETTLED. Last week I received a bill from a different collection agency in regards to payment in full for the same capital one accout. Can capital one still try to collect the difference between what I settled and what i may still owe? I have attempted several PFD, offering 100%, never got a response from capital one.