David C.

File card dispute under misrepresentation to get your refund, Plumeria has a return policy in bad faith that they do not intend to honour because the representative/CEO/Gabrielle Cimon will tell you only after the item is returned that you only receive store credit if your order had a discount code

Except the website runs never ending sales with forcibly applied discount codes you can not remove at checkout, vendors are not legally required to provide change of mind refunds, but saying you will and then preventing customers from doing so is illegal, file a business complaint to the Californian Office of the Attorney General