Contact the venue if you bought it in person, if you bought it online through something like axs or online city tickets go to the respective website and look for a solution there
Sell them in craigslist
Most of the time, all ticket sales are final and non- refundable. You can either sell the tickets on a third party site or just sell it in person on the day of the event. However, some events might offer a refund for the event tickets if you have a acceptable reason to do so.
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