As far as I know, since you submitted an offer with that agent/office, that agent/office is entitled to full payment/commission if you decide to submit another offer on the same house during the 6 months the first offer was issued.
If those 6 months haven't expired yet, I would recommend to set up a meeting with the office's broker, and discuss this issue with him/her, and may be you can get another agent from the same office assigned to work with you.(you shouldn't go through a purchase process with somebody you don't feel comfortable with, and I think you can may it work by talking with the broker)
There is also a chance I may be wrong, just to be sure, you can call to the Board of Realtors and ask them directly, Phone: (201) 867-4415
Exit Realty Premier