I was called about a debt that was written off XXXX years ago, by the credit card company. It was then sold to several collection agencies, before ending up in the hands of XXXX financial in Illinois. ( XXXX ). They never stated this was an attempt to collect a debt, nor read the " mini mirnada '' required by debt collectors. The guy then proceeded to insult me, calling me a child, a bum, loser and so on. 
I eventually hung up, but after working in collections for a short time, I know what they did is illegal and they need to be fined for this.