Honey works better than vinegar. I would bet that if you were nice and explained the situation, they would be reasonable and work it out.
I would try and say that they don't give me s receipt
They usually require a receipt I would talk with the manager
They have a strict policy that is posted by every checkout stand. You may return goods within one week of purchase for credit on another item only. Without a receipt, you cannot prove date of purchase, so probably not. You might be able to talk them into a swap for an item of the same or lesser value, but I would not count on it. Too many people steal stuff and try to return it for cash, which they just cannot realistically do.
I would try
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