Citibank Debt Collection Complaint

Citibank Debt collection department,

Credit card Disclosure verification of debt Not given enough info to verify debt California

In -/-/- I received a court document showing a lien against me in California. I live and work in - so this envelope came to my parents house by regular mail. I emailed - asking for proof of it being my debt ... no answer. I gave permission for - to negotiate pants with mom ( revolving acct opened -/-/-- no pmt made since -/-/-. They would not agree to payment plan or negotiate a lesser amount. 5 days later, with no notice, $2000.00 was removed from my bank account and I am now stranded in --with no $ $ to return to work after the holidays in -. Does all of this seem legal? --