I was contacted by phone, with a threat of criminal prosecution if I did not pay the amount in question, on a loan I know nothing about, did not apply for or receive, and have never received any bills for - and they would not provide me with any of the details about the alleged loan - hanging up on me several times over the past XXXX days. 
They are threatening me with criminal prosecution - something that could destroy my career, clearly trying to frighten me into paying the {$630.00} in question - an amount I could have paid at any time, and which I have considered paying to make this go away - even though, as I have said repeatedly, I did not take out this loan, and if XXXX was taken out, it was done fraudulently.