To the OP... I'm sorry you were in that situation; however, I agree with KneelJung. You should've talked to the place you bought them from first, before going straight to Grado.
When I purchased my SR80i from Headroom (headphone.com), and I wasn't satisfied with the quality of the headphone because the plastic had scrapes on it, the silver lettering was worn off, and the ear pads had some knicks and cuts on it. I called Headroom, and they told me to return the headphones for a full refund. I sent them back the next day, they honored their promise, and refunded my money.
A lot of people don't like buying from Headroom, because they're expensive a bit more expensive than most places, but honestly, I would pay a little extra for their customer service. The guy there, Dan, seems to know a lot of about headphones and didn't once hinted or blamed any mistreatment on my part, which is rare from any store, be it online or walk in.