Messerli & Kramer P.A. Debt Collection Complaint

Messerli & Kramer P.A. Debt collection department,

Communication tactics Threatened to take legal action Minnesota

They will not tell me who the original creditor is have asked several times. They asked for proof of recieving - - months ago I provided it. Now - months later there requesting it again. They have called me at my work in the past I asked them to not call me there within a month they called me there again putting my job in danger. Very rude on the phone.