This is ridiculous, they are making you jump through hoops. They are trying to stall you, and have you get tired of this and get disgusted and go away.
Don't let them fool you. This is what they do, it's corporate that will tell them to give you a low ball offer to make you go away (offering you the $1750 instead of the full price), they really hope you will take that price. DON'T.
I have had NM send me a bag (caviar flap) that had no auth card in it at all (I refused it), so they do not need that card back if you have lost or misplaced it. Don't allow them to put this kind of pressure on you.
If I were you, I would stop contact with this manager, and call the higher up in that store, or in that company, if that is the General Manager or whatever their title is. You are dealing with low level people (the manager).....you need to get higher on the corporate chain. I would not make another drive to that store again.
You need to speak with the GM (or higher) and demand (politely, but firmly) your refund. They have been running you in circles long enough! You know, they really do this to try and overwhelm you (saying you have to find the cards and box), and making you drive so many times, then lying to you and the manager refusing to speak to you on the phone or a manager refusing to come out to the counter to speak with you.....they are trying to wear you down, please know this is all done on purpose.
Stop the madness and go over their heads, get your refund check sent to you in the mail. I wish I could pick up the phone and make this call for you....I hate when companies do this to their customers/consumers. I have worked for a huge corporation who used to do the same thing, and I see exactly what they are trying to do to you Christie, and it's not right.
You have to try and not take their actions personally, you are getting upset.....this means they are getting to you. Be tough and be strong, you are fighting their stupid corporate policy, and you WILL win. Because you are int he right, you have done nothing wrong. It's such a shame that companies do this to people, but they do.
Christie, call that store and get the GM or whoever you need to speak with....you no longer need to go back there, it can all be done by phone at this point. If you get no satisfaction from that exact store, call their main headquarters.
Here's a link to their website of corporate:
http://phx.corporate-ir.net/phoenix.zhtml?c=118113&p=irol-faq#8730
Here's the number to call, it's at their headquarters in Dallas Texas:
What is the address of the corporate office?
Correspondence for the corporate office may be sent via US Mail to The Neiman Marcus Group, Inc., One Marcus Square, 1618 Main Street, Dallas, TX 75201.
The main phone number is (214) 743-7600.
Call that number...start from there. This is what I would do. Please inform us of what happens, whatever you decide to do. You may need to provide them with the managers name and so fourth, have all info ready.