A store of Da Vinci in Hangzhou, Zhejiang Province,?is closed down due to faking certificates of origin for its products. [CFP]

Furniture imports dealer Da Vinci, which has been accused of faking certificates of origin for its pricey pieces, released a public apology letter Monday afternoon that said the company will "take responsibility and fix the mistake."

The Guangzhou Daily reported Tuesday that some consumers complained the letter did not mention whether and how past customers could obtain refunds.

One Da Vinci consumer in Guangzhou, who would not provide her full name, told the newspaper that government agencies that oversee industry and commerce should take action to protect consumer rights in such cases.