zwicker and associates?

I once got tricked into debt settlement company only to realized that all the money i gave them ( about $2,000 ) went to nothing , at the time i thought they were like company who buy debts and give me discont , anyways i owe discover for about $4,600 then when CREDITSOLUTIONS can not settle any debts i delt with discover directly and they scheduled $246 a month for 6 months , after CREDITSOLUTION found out they said i delt with them so it is a breached of contract and they canceled my account =\ o well learn from my mistake , however i got a call today from

ZWICKER AND ASSOCIATES ,they said they r a law firm and discover asked them to investigate so they charged discover $1,600 and went to judgement and got awarded so i have to now pay them $2,000 plus the amount of money that i owe discover which is $3,600 plus interest of $40 a month start from the date of the judgement court so its 34 months which come out to be $1300 or so in interest plus the principle but the thing i don't understand is this

they said discover filed the lawsuit and awarded judgement on 5th of july 2008 but at the time i was paying discover $240 a month for 6 months ( ended in july 30th 2008 ) y would discover have lawsuit against me when i am setting up payments , anyways after the payment time ended i called discover but they said they already sold the debt to someone else so i no longer deal with them , now zwicker and associates filed a lawsuit and i owe a total of $6,700 including attorney fees , i'm confuse , then they said we can offer u discount so if u pay $5,500 we can end the case but if discover no sold the debt to some agency y am i being sue by this law firm , what is going on , r they debt collector? what r they? when i pressed they said well the judgement date is correct so ur not paying discover in july ,ur date is wrong so i said " i have prove right here " then they changed the judgement to sept , and when i asked to see a copy of the judgement they said they r not sending anything out ," u can go to the court to get the paper but will u pay us today ? " i told them it sounded like a threat so now the lawyer gonna get get a manager... what? when the manager come he sounded really rude so i asked what company is this and he said well i have another manager so i will go get her... lawyer has managers? what is going on? im i being con? i see the judgement on my credit report but i never recieve any suphena or nothing , they said they sent it to my old address in sept of 2008 but i havent move until 2009 what is this?