Sued a collection agency in fed court NeVada

My question involves collection proceedings in the State of: Nevada

I worked with a certain fdcpa violation plaintiffs firm for several years now. They kept transferring my case between lawyers in their firm. I think I worked with 3+ paralegals before this point. My credit report was damaged by a debt collector.

I had a collection agency call me-I believe I recorded the call. Some of the firms files are corrupt. Anyhow, I told them verbally that I had disputed he debt. I asked them to stop calling until they could confirm the debt. Instead of getting confirmation, I got a phone call from another collection agency. This is despite the fact that the debt arose out of CA and the Rosenthal Act should hold the original creditor liable as well. Well, the law firm filed ONLY against the second collection agency.

Long story short, a deposition is on Tuesday morning. I knew absolutely nothing of it until about Friday and Monday will be a holiday. So I was essentially called by the attorney one business day before, she was huffing, like something is very wrong with her and asks me for permission to dismiss the case. I told her I had damages and had busted my butt to give the firm everything they had requested over he last two years. She turns around and says she won't be at the deposition (She would have to fly cross country and was supposed to be on vacation anyhow). She also tells me she will do it over the phone (which I am NOT OK with).

She tells me that all they had to do was mail a letter, even if the address was bad (the address WAS bad and to a company that does not return to sender-just delivers to new box-holder), and wait 30 days and then my dispute could legally be ignored.  (I believe my prior dispute verbally should have sufficed, followed up by my disputed submitted to them in writing via their website).  Then she tells me that they will win against me and seek sanctions against me! She has essentially thrown me to the sharks and I don't believe her heart is truly in this fast approaching depo. Thoughts??? TY!!!