sued by a credit card company

I dont believe so...you need to negotiate directly thru whoever is collecting on the judgement. The biggest problem I forsee is that you need to be in touch with the collector, not a third party. You risk being garnished or levied.

Can I know who sued you? Is it the creditor or the debt collector? Did you receive the legal papers? You can settle with either the creditor or collection agnecy, whoever has sued you.