You should contact the broker of the company that you listed with. I don't understand what work you are referring to in your question, but, "TECHNICALLY" and you would need the listing agreement to read this, but there is a section of performance spelled out for the Company/Broker/Agent as well as for the Seller. IF they are in default of those terms (not communicating with you or providing you with copies of all you signed) they are in default and you SHOULD be able to withdraw the listing.
If there is a "penalty" for withdrawing early it HAD to be spelled out for you at the time your signed. I just don't know of many that will hold a listing hostage if one or both parties can't work together harmoniously. I wouldn't want to try to show a listing when I have a Hostile Seller that is NOT going to make it easy for me to show the property PLUS probably won't accept any offer I bring to them.
Call that broker! Good Luck.