Dynamic collections horrible collection agency chehalis Washington

This collection agency is awful. I called today to willingly set up a payment plan. The lady belittled me and said they contacted me numerous times. Then proceeded to say they called me a couple times in October. I have recieved no mail from them. She was very unwilling to work with me in anyway. Very rude overtalked me the whole conversation as if she was paying the bill. So im sure they will try and garnish my paycheck now that they know where my new job is with out sending any notification.  I cant wait until they do because I've got something for them