You file a tax return for that city to seek a refund of the tax that was withheld, since you did not live or work there. TurboTax only helps with a few city returns, so unless you are dealing with one of those cities, you will likely have to get the form from the city's website and prepare it yourself.
City Tax Returns
https://ttlc.intuit.com/questions/1899325-which-city-tax-returns-can-i-do-in-the-turbotax-state-prog...
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