What should I do about my TM30 extension issues with my landlord and immigration?

TM30 nightmares. Applying for an extension less than two weeks ago, manger never answered the phone and I managed to get the owner of the room on the phone with immigration, I was fined 800b. A couple of days ago the manager said she will do it whenever I enter back into Thailand. Now that she has looked at the online page and info, she is stating she will NOT do it and suggested I call the owner of the room, whom I have never met and is nearly blind. Owner of the room has no idea of the regulation, yet he spoke to immigration a couple of weeks ago. They are both playing the "I don't know, and don't want to do it card". What should I do? I just returned from Cambodia yesterday.