I've purchased shoes from Skechers, and one of them is making a loud squeak after about a while of use, but the store won't exchange them, how does the return policy work when a customer isn't fully satisfied?

Skechers has a 45-day return policy for items that are unworn and in good condition. If you are dissatisfied with your purchase within this timeframe, you have the option of returning the shoes for a refund or exchanging them, as long as you have the original receipt.
If the store declines your exchange request, contacting Skechers customer service directly may provide a solution. They have the ability to help resolve the issue at hand.
If you are unable to reach a resolution through Skechers' customer service, it may be worthwhile to consider filing a formal complaint.