ECMC Educational Credit Management Corporation Evil Harrassment St Paul, Minnesota

ECMC has harrassed me over a 4 year period! Threatening me with jail and claiming to work direct with the government! Ive written them over and over not to call me at home,and they still do,,they just have different people call and claim they know nothing of my written file to not call at home! They call every two days ,they send nasty letters,!  
                                                 
They did 4 years back con me out of $940.00 !I checked with the government and made sure my student loan was paid off,and got back with ECMC that i didnt owe any student loan and their $940.00 they got out of me was all they were getting! They claim i owe them now and they have added 4k in the past 4 years claiming its collection feeds! I dont owe any student loan and they just wont stop with the harrassment!