send wrong parcel. nightmare customer service

<p>Ordered an ADSL modem which I need urgently, so instead of a modem I received headphones.</p> <p>immediately contacted customer service (yesterday). the only thing they care about how I ended up with the wrong item. They requested me to send pictures of the item and the barcode which I promptly did.</p> <p>Today I receive an e-mail with exactly the same question. Not a single word about when I should expect my modem.</p> <p>Please can you put the customer first and just send me the modem I ordered and you promised to deliver GUARANTEED WEEKEND. you can figure out how I ended up with the wrong item later</p> <p> </p>