Midland funding LLC Rubin & Rothman
Can i file a complaint of lawyers who don't know the details of their own dunning letter?

I answered the summon from Midland last week, court day is on May.in the mean time, their attorney Cohen & Slamowitz kept sending me letters for settlement which they ask for more than what they ask in the summon, offer 50% discounts, and even offer to settle before i get my tax refund. I ignored all of those.
Today i received another attorney RUBIN & ROTHMAN representing Midland again, this time, they ask for 1000 more than what the summon stated. It looks like a scam to me because it doesn't indicate any credit card number or original creditor. It just said i owe Midland this amount of money, then list all the methods of payment.
It also ask me to valid the debt with 30days. I am very confused, so If i don't dispute this, due to the fact that I don't even think I owe them and the letter looks fishy, they would ASSUME i owe them and make the debt valid?
In the last paragrahy, it said "at this time, no attorney in this firm has personally reviewed the particular circumstances of your account."
so what are they sending me this dunning letter for? Can i file a complaint on these lawyer? Where should file my complaint to? What are they ask me to dispute for? Should I just ignore their letter? Or sending my debt validation letter which they won't answer back anyway?

Company: Midland funding LLC Rubin & Rothman
Country: USA
State: New York
City: Islandia
Address: 1787 veterans highway

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