If you are unhappy, try talking to the BO first.
Where I board I have partial care for $275/mo. That means that the BO feeds my horse and brings him in/takes him out daily. I have to clean his stall daily, exercise him, etc... If I want a blanket on him, I have to provide it and most of the time I put it on/ take is off when needed. The BO is very reasonable though and knows that I come out in the evenings, so if it is worm in the morning and she thinks it shoudl come off, she will take it off. For the most part though, I understand that blanketing is my responsibilty, not hers and I appriciate when she does more than I expect. For $230/mo., you are really getting a good deal if you are expecting full care with blanketing. Maybe you are expecting too much. If I were you, I would sit down with the BO and if you don't already have one, do a written contract that specifically spells out what is expected by both the BO and you. If you already have a contract, read it and if you have any questions, go to the barn owner. If things are in the contract that the BO is suppose to provide and they are not providing it, then is when you talk to them again, if it does not change, then move.