Dismal customer service

I ordered a sleeper couch online for my business. On ordering their website requests a billing name and a billing address which I dutifully completed. Unfortunately the invoice picked up my personal details instead of the company details. I have spoken to their customer services almost daily for over a week now and all I get is someone saying they are looking at this. I've sent emails to customer services and I get a rude message stating that they don't change invoice details. So I would never recommend this company to anyone who owns a business. I want them to collect their item and refund my money. What is so complicated about issuing a credit note and re-invoicing?