Unordered item delivered to me?

Hi.Few days ago, unordered item from a retailer. delivered to me under my name and address. There is no any invoice or receipt in the box. Should I re

Hi.
Few days ago, unordered item from a retailer. delivered to me under my name and address. There is no any invoice or receipt in the box. Should I return it back to the retailer? or Can I keep it?

or:Hi.Few days ago, unordered item from a retailer. delivered to me under my name and address. There is no any invoice or receipt in the box. Should I return it back to the retailer? or Can I keep it?

or:You need to make sure that you weren't charged for the item and they didn't get your account information so they could charge it to your credit card . Charged to any other card you might have bank information you don't want them to have i would be checking this situation out.

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