My question involves judgment recovery in the State of:VA

Credit Collector sent bill for a credit card balance, we followed advice and asked for confirmation which none was given. Collector filed with courts and we counter sued for improper collection practice (we did not use a attorney). Collector agreed to pay us amount we sued for with written agreement that we both drop court case with court Dismissing with Prejudice so case could not be re-filed.

Today I received a "Settlement Opportunity" from same collection company requesting payment in full by September 10th despite our contract agreement that collector was to drop any and all collection for debt they state we owed.

What is my recourse? Can I re-file for damages of contract default? Suggestions on how to handle this matter please.