No, you can only return non-faulty goods for an exchange or refund if the retailer has a returns policy.You have the legal right to return the item for a full refund. No ifs, buts or maybes. Speak to the manager if need be.
Unless you've asked beforehand. If you've asked could they be returned and the answer was yes, then expect a credit note.you bought it in store. you have no automatic right to return it unless it is faulty.