However, to answer your question - if you are already into contract, the best you can do is ask the brokerage to re-assign another agent. They may or may not chose to do so. The agent you're using has already earned the commission.
I do understand your frustration and your concern. If you "signed" a buyer's representation with this agent, and you feel that this agent is "not" helping you in any way....then you can speak to her broker and request that this agent not represent you anymore.
Call or email me and I can give you some direction. The easiest path may be to speak to the agent's broker and get him to step in.
I would be happy to discuss with you.
If you are not happy with your agent, you should certainly look for another. The last thing you need with the stress of trying buying a home is an agent who is unwilling to help you, let alone the potential liabilities that could ensue. Has your offer been accepted by the seller on the property you are trying to buy? Are you still within your time period to back out if you are uncomfortable with the amount of work needed to be done? These are questions your agent should be helping you with and guiding you through. I'm an agent with Coldwell Banker here in LA. Please email me at firstname.lastname@example.org or call me at 323-810-7976, and I can possibly help you out if I can get some more information from you, and at the least would be able to refer you to a competent and knowledgeable real estate agent in your area.
Thanks, take care..
Coldwell Banker Residential Brokerage