I don't know the Chicago market but, based on the previous comments from Realtors, it appears your property might be overpriced. That's problem one.
Should you switch agents? The answer depends on whether the agent is doing a good job for you. And here, without badmouthing the agent, the signs are mixed. On the one hand, if it came on overpriced and it remains overpriced...and your agent is saying a price cut won't help...then I'd question whether the agent is really in touch with the market. On the other hand, if you've had "some good showing," then your agent may be doing a pretty good job of marketing. That is, unless the other agents are using your house as a "straw man." That is, they want to sell a property they know about (and maybe have listed themselves) for, let's say, $330,000. They take their clients to your property first, show them what they can buy for $345,000, then take their clients to the $330,000 house, which shows just as well. It's a no-brainer for the buyers.
What sort of feedback have the showing agents provided your agent? That's very important to know. One other possibility--a real tell-tale sign when a property gets lots of showings but no offers--is that your property doesn't show well. Does it need paint and new carpet? Is it outdated? Harvest gold appliances, or pink and green bathrooms? Or maybe it needs staging. Cleaning, decluttering, and reorganizing. Staging helps virtually all houses, and is a very cost-effective way to improve your property's appeal. And make sure the curb appeal is top-notch.
So, if you really want to sell it, have your agent run a new CMA. Price your property 5% under the lowest comp. Call in a good home stager and turn her/him loose. And working with your agent to fully market the property, and to follow up with anyone who shows it.