Similar to me years ago... missing pieces, delivery truck no-shows...
... it wasn't pretty.
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I understand about manufacturing issues, so I wouldn't suggest you ask for a refund
YET, afterall they did refund you the delivery charge in order to keep your business. But I would suggest while you're waiting for your furniture that you continue to search if another store has the product that you want
in-stock. If that happens to be the case, take your business elsewhere.