Abysmal customer service

I ordered various items of clothing for delivery based on the information on the website. When the order arrived one of the items was incorrect. I ordered a lace balconette bra but was furnished with a pair of panties instead. I responded to the contact form attached to the order but have not received a response in a week. I would have imagined with the current difficult economic situation companies would have faster turnaround times and be willing to investigate the issue. I would like this resolved ASAP and at the very least expect to be afforded the courtesy of a response.