Sometimes it's not about the listing agent. Sometimes it's about the listing and the other listings within a building that determines showings.
One thing your agent CAN do is if you choose to drop the price, have your agent cancel the existing listing and relist with new photos and new copy. Your listing is showing as being 347 days on market which presents a bad 1st impression to buyers.
Bill is correct in that Realtors are not allowed to solicit your business while you have an agency contract with another brokerage.
There are three basics of RE: location, condition, and price. Location we can't change. Have you and your Realtor toured comparable listings? Is your property in better condition than the competition? Are you receiving weekly CMAs and PTAs? This part of selling your property is a beauty contest and second place doesn't count.
Are you getting at least two showings each week? What is your (you and your Realtor's) marketing plan?
When you are ready to make a change, interview at least three Realtors. Ask them about marketing plans for your property (and, no, an MLS listing and a lock box in the lobby is not a marketing plan). Ask them how many similar deals they have closed recently.