credit card debt attorney

The attorney for my Chase Credit Card old debt has filed a claim with the National Arbitration Forum, help!?
I received a letter from the Mann Bracken law firm with locations in GA, VA, NC, TN stating that a claim was filed with the National Arbitration Forum (NAF) regarding my old Chase Bank Card debt, and that I must respond. I have no idea what to do here. I am worried that they will garnish my wages and/or bank account. I beseech anyone with legal knowledge of this type of situation to please help me understand what I should do. I live in Texas. Thank you!
how about pay off your debit, Yes chase credit card is evil and they alone caused me to have bad credit and i dont recomened them to anyone but i made a settlement with them after they cancelled my card due to one missed payment due to the fact there website was down and i couldnt log in to pay it and i have paperless billing but enough about me i ended up paying half of what i owe they took away all the fines and fees they charged me and paid only what i used.