XXXX/XXXX/2015 receied call from XXXX claiming to be from the XXXX Law Firm, calling on behalf of XXXX XXXX to collect an old debt. I explained the debt was discharged in Bankruptcy court XXXX years ago but he didnt want my lawyers information. 
He threatened me with IRS issues and said he was investigating me for a criminal act. 
called # back and got voicemail. XXXX search shows this info : XXXX Law Firm, XXXX XXXX XXXX, TX XXXXPhone : XXXX. I called # ending in XXXX and reached same voicemail as the # of the dept collector XXXX. Didnt have my address but wanted it. After not getting info he hung up on me.