If an email was sent they will have a record of it, tell them your email address. Worst case they'll give gift card.
The store policy (not their public policy) is they will refund an unopened item without a receipt within the first 15 days.
If you used credit card then they can take it without receipt.
It shouldn't be a problem.
You may be able to go online and check
Store credit.
I think they will give you store credit, I know Walmart does it that way without a receipt
For store credit and sometime s they take ten percent
I would call and ask
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