Was it the Law Firm of OJ Lawal or 1st Integral? There are several threads about this firm here. They are a 3rd party collector and do have a surety bond posted with the TX SOS:
Principal Name: First Integral Recovery LLC # 16
Address: 9898 Bissonnet Street Suite 670
Houston, TX 77036
File Number: 20070216
Status: Active
Date Filed: 10/10/2007
Cancellation Date:
Phone:
Bonding Company: Hartford Casualty Insurance Company
Bond No: 34BSBET2067
OJ's Texas Bar number is 24004144. You can file a complaint with the Texas Bar at (800)932-1900