I don't even know where to start, but I'm going to keep this short b/c I really don't feel like typing. Also, do a bit more research about your consumer rights.
The statue of limitations to seek satisfaction (lawsuit) for a credit card account (open) is 4 years in Georgia. (OCGA 9-3-25). Reporting tradelines to the bureaus is 7 years.
A few questions you need to answer:
When was the account charged off?
What is the date of first delinquency a.ka. first missed payment?
Are the collectors working for the original creditor or are they junk debt buyers?
Have you ordered hard copies of your reports to see how the tradelines read?
Things you need to consider:
Unless you request validation within the first 30 days of receiving a dunning letter you are not protected under the FDCPA. After 30 days, they don't have to validate a damn thing.
They can file a lawsuit at any point to try and collect. That's why it's important to know when you missed your first payment. If it's outside of SOL then your defense would be that the account is time-barred.
Discover is known for forcing people into arbitration since it's stated in your credit card agreement.
This account may exchange hands for the next ten years even after the SOL for reporting has run out. Pay for a good credit monitoring service.
If they know you own property, they will come after you with a vengeance. It stands to reason you have more incentive to pay.
Never talk to a DC on the phone. Send them a certified letter stating that all correspondence will only be done via USPS.
If you work out a payment plan, make sure it is in writing that they will delete the tradeline from the bureaus after receiving the money. Verbal agreements are NOT acceptable.
They can't garnish your wages, lock your accounts or levy your property unless they have won in court.
I'm sure there's more, but I haven't had any coffee yet.
Knowledge is power.