What are my rights?

Due to financial difficulties, I got really behind on credit card payments. Five months later I am informed by phone (from an attorney) on Sep. 8 that I am receiving an audit against me, if I don't come up with $3500 in 5 days. The attorney (who's client is the credit card company) told me that the credit card company told him that they gave me a two week notice. However, that is a lie. If they gave me a two week notice I would have been able to come up with the $500 minimum and my account would have returned to good standing. On Sep. 9 I received a regular statment in the mail. It said that my account would be in good standing if I paid the credit card company $574 by October 2. Their attorney filed an audit against me on Monday morning, since I was unable to come up with the full amount. After lying to their attorney, the credit card company later told him that they didn't have to tell me. If they didn't have to tell me then why did they tell their attorney that they did?