As far as I know they are nothing but a collections agency from what you stated. If they claim to be a lawyer and are not a lawyer they are already breaking the law right there. They cannot take your CDL or anything else they threatened to take for this debt.........a judge on the other hand could and since you stated you have a court date in 3 weeks I assume it's for this. It sounds like what is happening is the statute of limitations is about to run out so they are pushing hard to get you to pay something. If you don't pay, they don't make any money themselves. Collections rarely want to go to court because it ends up costing them even more money which eats into their profit unless it's a large debt. My brother figured that out, he dared the collections people/Sprint to take him to court over $150, he never heard from them again. They either are lying about putting a freeze on your accounts or you had Direct Deposit with this other company, that is how they get the account number legally.
Also this thread might be best in another section of the forum, I'm just not sure where it should be though!
So for now I'm leaving it here in Announcements.