Charged off credit card Experian. Transunion Equifax removed account

I was hoping you might have some advice for me. I have one last charged off credit card on Experian. I was able to get this item off of Transunion and Equifax. In fact, my credit is clean and I have good revolving credit otherwise. I keep mailing the dispute to Experian, and they keep mailing me back a letter rejecting it.
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give it up and go on.
you have done all you canwait 7 years from date of last activity.
get and keep new good reported credit