Capital One Credit Card Complaint

Capital One Credit card department,

Payoff process Texas

I called Capital One on - to try to resolve an old charged off account. The account has a balance of $4300.00 and I spoke with a representative that offered me a " Paid in Full '' Settlement for $2700.00 to which I agreed. Capital One emailed me a settlement offer letter. I called back with a follow up question an hour later, and the representative informed me that Capital one was withdrawing the offer because I had been issued a - for this debt in 2014. I would like to resolve this account for a paid in full $0.00 balance to be reported to the credit bureaus. I have the ability to pay, but Capital One says that this debt is now uncollectable and forgiven. Please help.