Yes, that is a consideration, but the OP said this had been going on for a month and they had lost $20,000.

Those WIPO investigations can take 3 or 4 months where you have registered trademarks, business name etc. This one will likely take longer.......... that would add up to some serious money?

I guess they must have a backup/copy of their original site, so it is just a case of finding new hosting and advising their customers?